Journal ArticleOptics and Laser Technology · February 1, 2025
In this study, laser cladding technology was employed to fabricate Inconel 625 coatings on the surface of 15CrMo alloy steel. The formation appearance, melt width, dilution rate, composition, microstructure, microhardness, and wear behavior of the coatings ...
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Journal ArticleProcess Safety and Environmental Protection · November 1, 2024
Waste incineration is an important component of solid waste management systems in cities worldwide, offering advantages such as rapid waste volume reduction, heat recovery, and power generation. However, the power efficiency of waste-to-energy plants is re ...
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Journal ArticleSurface and Coatings Technology · October 30, 2024
In this study, a wear-resistant coating of high boron content Al1.5CoCr2Fe1.5NiSi0.5B2 high-entropy alloy (HEA) was prepared on X65 pipeline steel by laser cladding. The coating underwent microhardness testing, wear performance testing, and analyses includ ...
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Journal ArticleSurface and Coatings Technology · October 15, 2024
This study explores the high-temperature corrosion behavior and mechanisms of laser-clad Inconel 625 coatings applied in waste incineration environments. Inconel 625 coatings were deposited on a substrate using laser cladding technology, and corrosion test ...
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Journal ArticleMaterials Science and Engineering: A · October 1, 2024
Surface etched graphene nanoplatelets (SEGs) were obtained by KOH etching of reduced graphene oxides, and the etching degree was controlled by KOH addition. Nano-sized pores with diameters mainly around 1 nm and 4 nm were created on the surface carbon laye ...
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Journal ArticleJournal of Alloys and Compounds · July 15, 2024
Figuring out the effects of LPSO morphology on the deformation mode and strengthening mechanism of Mg-RE alloys is helpful to improve their formability and mechanical properties. In this work, the Mg-8Gd-1Er-1Zn-0.6Zr (GEZ811) alloys with monolithic block ...
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Journal ArticleFatigue and Fracture of Engineering Materials and Structures · April 1, 2024
In high-temperature geological engineering applications, cyclic loads induced by various factors (e.g., earthquakes, excavation, and blasting) can exacerbate the thermal damage of engineered rock formations. Therefore, this study investigates the mechanica ...
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Journal ArticleSurface and Coatings Technology · February 29, 2024
This study examines the high-temperature oxidation behavior of laser-clad Inconel 625 coatings under different temperature and time conditions. The coating's microstructure, compositional elements, and oxidation products have been characterized through var ...
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Journal ArticleActa Metallurgica Sinica (English Letters) · December 1, 2023
The lamellar and orientational characteristics of graphene nanoplatelets (GNPs) are crucial for reinforcing metal matrix composites, particularly in terms of their thermal properties. Two kinds of GNPs with plane sizes of 6 µm and 80 µm were respectively u ...
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Journal ArticleCailiao Gongcheng/Journal of Materials Engineering · July 1, 2023
Hot deformation behavior of as-cast BFe30-1-1 alloy was systematically investigated at the temperature of 750-1000 ℃ and the strain rate of 0.01-10 s-1. The effects of friction and adiabatic on the flow stress were analyzed. The stain-stress curves caused ...
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Journal ArticleMaterials · May 1, 2023
The hot cracking behaviors of Mg-5Zn-xEr (x = 0.83, 1.25, 2.5, 5 wt.%) alloys are investigated by optimized hot cracking experimental apparatus, optical microscope, and scanning electron microscope, such as contraction behaviors, feeding behaviors, and per ...
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Journal ArticleMaterials · March 1, 2023
Due to their excellent mechanical properties and large specific surface area, graphene and its derivatives are widely used in metal matrix composites as reinforcements. In this study, the thermal reduction behavior of large-size graphene oxide are investig ...
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Journal ArticleZhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals · March 1, 2023
In this paper, Mg-3Zn-0.2Ca-0.2Mn alloys with similar second phase content and different grain sizes were obtained through the solid solution process, and the alloys with different grain sizes were subjected to immersion and electrochemical experiments in ...
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Journal ArticleCailiao Gongcheng/Journal of Materials Engineering · January 1, 2023
The effect of carbon nanotubes (CNTs) on the aging behavior of Mg-9Al matrix composites was studied, and the evolution of microstructures, mechanical properties and thermal conductivity of composites during the aging treatment were discussed. Results show ...
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Journal ArticleJournal of Magnesium and Alloys · October 1, 2022
The vulnerable corrosion resistance of Mg alloys is regarded as one of the main disadvantages restricting their application, while it can be used as an extraordinary specialty in some particular fields, such as petroleum exploitation and medicine. In recen ...
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Journal ArticleCailiao Gongcheng/Journal of Materials Engineering · September 20, 2022
The Mg-xGd-1Er-1Zn-0.6Zr alloys with Gd contents of 7%(mass fraction), 9% and 11% were prepared by gravity casting method.The microstructure of the alloys was studied by means of optical microscope, scanning electron microscope and X-ray diffractometer.The ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · June 1, 2022
The corrosion behaviors and mechanism of the as-rolled Mg-xZn-0.5Er (x=0.5, 2.0, 3.0 and 4.0, in wt.%) alloys were investigated. The potential difference between the second phase and matrix was determined by the type and size of the second phases. The domi ...
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Journal ArticleMaterials · March 1, 2022
The effect of the Ca2 Mg6 Zn3 phase on the corrosion behavior of biodegradable Mg-4.0Zn-0.2Mn-xCa (ZM-xCa, x = 0.1, 0.3, 0.5 and 1.0 wt.%) alloys in Hank’s solution was investigated with respect to phase spacing, morphology, distribution and volume fractio ...
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Journal ArticleZhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals · February 28, 2022
Hot tearing is a potential problem that deteriorates the ductility of Mg castings. The effects of Gd content on the hot cracking susceptibility (H) of Mg-xGd-1Er-0.5Zr (x=8.0, 10.0, 12.0, mass fraction, %) were predicted based on the Clyne-Davies model, an ...
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Journal ArticleZhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals · February 28, 2022
The magnesium alloy sheet has a great industrial application value, but the further application has been restricted because of its inferior formability. Aim to this problem, the Mg-xZn-0.5Er alloy sheets were produced and investigated in the present invest ...
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Journal ArticleJournal of Alloys and Compounds · February 10, 2022
In this study, we investigated the microstructures and mechanical properties of Mg-6Gd-1Er-0.5Zr (GE61K) sheets. The results show that the rolling temperature has a remarkable influence on microstructures, age-hardening responses and mechanical properties ...
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Journal ArticleJournal of Electroanalytical Chemistry · January 1, 2022
In this research, the micro-morphologies, electrochemical behaviors and battery discharge performances of the Mg-2Zn-xCa alloys as potential anode materials were investigated. The micro-morphology results showed that for the alloy with low Ca content (x = ...
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Journal ArticleCailiao Daobao/Materials Reports · September 10, 2021
The disposal of municipal waste has almost become one of the most serious urban problems faced by governments all over the world. As an important treatment means, incineration can not only achieve the purpose of reducing capacity and weight, but also reali ...
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Journal ArticleTezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys · August 20, 2021
The casting fluidity of Mg-xGd-1Er-0.5Zr (x=8, 10, 12, in mass fraction) alloy was investigated by spiral specimen method. The phase precipitation and microstructure of the alloy during solidification were analyzed by XRD and thermal analysis. The results ...
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Journal ArticleRare Metals · August 1, 2021
Abstract: The magnesium alloy has a unique advantage in 3C fields due to its high specific strength and excellent electromagnetic shielding characteristic. However, it is difficult to deform homogeneously because of hexagonal close-packed structure. In the ...
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Journal ArticleSurface Review and Letters · February 1, 2021
To increase the strength and wear resistance of material surfaces, various combinations of B4C and 80TiFe powder were mixed into a Fe60 self-fluxing alloy powder; the composite coatings reinforced by TiB2-TiC were successfully prepared on Q235 steel surfac ...
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Journal ArticleApplied Surface Science · January 15, 2021
Mg-Zn-Zr (ZK60) alloys reinforced by ultra-low content (<0.1 wt%) of graphene nanoplatelets (GNPs) were fabricated via stirring cast and extrusion processes. In composites, GNPs thoroughly dispersed and continuously combined with Mg matrix at the interface ...
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Journal ArticleActa Metallurgica Sinica (English Letters) · January 1, 2021
The Mg–12Gd–1Er–1Zn–0.9Zr (wt%) alloy with ultra-high strength and ductility was developed via hot extrusion combined with pre-deformation and two-stage aging treatment. The age-hardening behavior and microstructure evolution were investigated. Pre-deforma ...
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Journal ArticleApplied Composite Materials · December 1, 2020
A TiB2-TiC/Fe composite coating was successfully produced on a Q235 substrate by laser cladding through in-situ reactions among 60TiFe, B4C, Cr, Ni, and Si preset powder mixtures. Based on the available literature, scanning electron microscopy images of th ...
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Journal ArticleJournal of Alloys and Compounds · October 15, 2020
In this study, the multi-walled carbon nanotubes (MWCNTs) reinforced Mg-6Zn matrix composite was fabricated via powder metallurgy followed with aging treatment, and the thermal as well as mechanical properties of the composite were evaluated. Microstructur ...
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Journal ArticleXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering · October 1, 2020
Magnesium alloys, as a new type of biodegradable medical metal material, have a promising application in the field of vascular stents. However, the poor deformability of Mg alloys due to hexagonal close-packed (hcp) structure makes it difficult to fabricat ...
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Journal ArticleMaterials Research Express · September 1, 2020
In this work the ability of pure surfactant Sodium Dodecyl Sulfate (SDS), Cetyltrimethyl Ammonium Bromide (CTAB) and their mixed surfactants for graphene dispersion in aqueous solution was investigated. The uniform and stable dispersion solution was obtain ...
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Journal ArticleBeijing Gongye Daxue Xuebao/Journal of Beijing University of Technology · June 1, 2020
The developed high-strength rare earth-magnesium alloys in Beijing University of Technology was introduced in this paper. By adding Erbium (Er) and Gadolinium (Gd) elements, heat-resistant Mg-Zn-Er alloys and high-strength Mg-Gd-Er(-Zn)-Zr alloys were deve ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · March 1, 2020
The microstructure evolution and strengthening mechanisms of Mg–10Gd–1Er–1Zn–0.6Zr (wt.%) alloy were focused in the view of the size parameters and volume fraction (fp) of dual phases (long period stacking ordered (LPSO) structures and β′ precipitates). Re ...
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Journal ArticlePhysics of Metals and Metallography · March 1, 2020
Abstract: In this work the formation of strong recrystallization cube texture in heavily rolled Ni–9.3 at % W has been studied. During the cold rolling (also known as recovery-rolling) process the deformation texture of Ni–9.3 at % W alloy (further notated ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · February 1, 2020
An extruded Mg−4Zn−0.2Mn−0.2Ca alloy was developed as potential biodegradable bone-plate due to its excellent biocompatibility. Long term in vitro immersion in Hank's solution and bending test were used to evaluate the degradability and the mechanical inte ...
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Journal ArticleRare Metals · August 12, 2019
The particles of Mg–Zn–Gd icosahedral quasi-crystal master alloy were added into the AZ31 alloy by the repeated plastic working (RPW) process in order to improve the mechanical properties of the AZ31 alloy at room temperature. The microstructure and tensil ...
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Journal ArticleApplied Surface Science · August 1, 2019
Defects in graphene nanoplatelets (GNPs) and their interface behavior to reinforce magnesium alloys was studied by using two types of GNPs, one with high integrity and the other with multiple defects, as reinforcements in ZK60 alloy. Herein, GNPs prepared ...
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Journal ArticleResources, Conservation and Recycling · July 1, 2019
China is the largest producer and consumer of refined copper in the world. The large amount of copper consumption not only creates added pressure surrounding resource availability but also causes prominent environmental problems. Although copper can be rec ...
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Journal ArticleMaterials Chemistry and Physics · May 1, 2019
The dispersion behaviors of multi-walled carbon nanotubes (MWCNTs) in water, using an ionic-gemini type molecule, 4, 4′-di (n-alkyl) diphenylmethane disulfate salt (C n -DSDM, n = 12, 14, 16) as the dispersant, were investigated. The MWCNTs reinforced magn ...
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Journal ArticleJinshu Xuebao/Acta Metallurgica Sinica · March 11, 2019
Mg-Zn-Er casting magnesium alloys have good properties, such as high specific strength, high specific stiffness and remarkable temperature creep properties. Current researches mainly focused on the phases and mechanical properties at room and high temperat ...
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Journal ArticleXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering · February 1, 2019
The creep behavior of the as-extruded Mg-8Gd-1Er-0.5Zr alloy at various temperatures (150~200℃) and stresses (50~70 MPa) for 100 h was studied. The microstructure evolution during creep was investigated by optical microscopy (OM) and transmission electron ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · November 1, 2018
The microstructure and texture evolutions in Mg-Zn-Er alloy during hot compression were investigated by using optical microscope (OM), field emission scanning electron microscope (EBSD) and transmission electron microscope (TEM). The results indicate that ...
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Journal ArticleXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering · October 1, 2018
A temperature acquisition system was used to measure average solidification cooling rate of GE81 alloys under different cooling conditions, including furnace-cooling in graphite mold, air-cooling in graphite mold, air-cooling in steel mold and air-cooling ...
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Journal ArticleMaterials Characterization · July 1, 2018
A compression test is performed to investigate the effects of carbon nanotubes (CNTs) on twin and texture evolution of the 1.0 wt.% CNTs reinforced magnesium matrix (CNTs/Mg) composite. The compression process consists of elastic, yield and hardening stage ...
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Journal ArticleJinshu Xuebao/Acta Metallurgica Sinica · June 11, 2018
In recent years, Zr is widely used as an important additive element in magnesium alloys containing rare earth (RE), to improve the mechanical properties of Mg-RE alloys such as strength, ductility, creep resistance and corrosion resistance property. Hetero ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · May 1, 2018
The effects of kinds of secondary phases on texture and mechanical properties of Mg–Zn–Er alloys were investigated. The results suggest that the I-phase has a great effect on modification of the texture via the discontinuous dynamic recrystallization mecha ...
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Journal ArticleJournal of Magnesium and Alloys · March 1, 2018
The effects of alloying elements of Ca/Sn on corrosion behaviors of the as-cast Mg–4Zn–0.2Mn alloy were investigated by immersion tests and electrochemical methods. The results indicated that the average corrosion rate value of the Mg–4Zn–0.2Mn–Ca alloy wa ...
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Journal ArticleMaterials Letters · February 1, 2018
The remarkably enhanced mechanical performance of Mg-8Gd-1Er-0.5Zr alloy with lower rare-earth content was achieved on the route of extrusion, rolling and aging processes in the present investigation. Results indicated that the ultrahigh UTS of 560 MPa and ...
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Journal ArticleMaterials Science and Engineering: A · January 10, 2018
Homogeneous magnesium alloy (ZK60) reinforced by low content of graphene nanoplatelets (GNPs) was fabricated by facile melt stirring and hot extrusion processes with cost effectiveness. GNPs were pre-dispersed with Mg powder and extruded into rods used as ...
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Journal ArticleXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering · January 1, 2018
Multiferroic ceramics Bi0.8Ba0.2Fe0.9M0.1O3 (M=Cr, Mn and Ti) were prepared by a conventional solid state reaction method. The pure phase with rhombohedral perovskite structure (space group R3c) was confirmed by the X-ray diffraction measurements for all s ...
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ConferenceKey Engineering Materials · January 1, 2018
A wet powder metallurgy (WPM) process was developed to disperse carbon nanotubes (CNTs), and to fabricate the CNTs reinforced Mg matrix (CNTs/Mg) composite. The dispersion effect of CNTs were evaluated by field emission scanning electron microscopy (FE-SEM ...
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Journal ArticleJournal of Alloys and Compounds · December 15, 2017
In this study, a kind of nickel coated carbon nanotubes (Ni-CNTs) reinforced pure magnesium (Mg) matrix composite was prepared using two-step process. The nano-Mg2Ni phase at the interface was in-situ formed to improve the interface bonding between CNTs an ...
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Journal ArticleJournal of Magnetism and Magnetic Materials · November 1, 2017
The lattice parameters, electronic structure, magnetism and multiferroicity of compound BiMn3Fe4O12 were investigated by using the first-principle calculations. The total energy calculations indicated that BiMn3Fe4O12 was a G-type antiferromagnetic insulat ...
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Journal ArticleBeijing Gongye Daxue Xuebao/Journal of Beijing University of Technology · October 1, 2017
To investigate the effect of alkaline-earth metal doping on the multiferroic of BiFeO3 ceramics, BiFeO3 and Bi0.9A0.1FeO3(A=Ca, Sr, Ba) ceramics were successfully prepared by solid phase method, and their ferroelectric as well as ferromagnetic properties w ...
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Journal ArticleRare Metals · August 1, 2017
The present study aims to improve electrochemical properties of the La–Mg–Ni-based hydrogen storage alloys through partial substitution for La by mischmetal (MM). The La0.8–xMMxMg0.2Ni3.1Co0.3Al0.1 (x = 0, 0.1, 0.2, 0.3) alloys were prepared by inductive m ...
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Journal ArticleBeijing Gongye Daxue Xuebao/Journal of Beijing University of Technology · July 1, 2017
In order to research the microstructures and mechanical properties of Mg-Gd-Er-Zn wrought magnesium alloy under different states. Mg-Gd-Gd-Zn alloy was prepared by conventional metal mold casting, solution treatment, subsequently hot extrusion and ageing t ...
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Journal ArticleModern Tunnelling Technology · June 1, 2017
Facing the special "soil/rock" mixed ground condition in the Changchun area, the monitoring data of ground surface settlement and the convergence deformation during cross-passage construction were analyzed, and the settlement and deformation laws were obta ...
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Journal ArticleComputational Materials Science · June 1, 2017
We present a theoretical study on structural stability, magnetism and ferroelectricity in an A-site ordered cubic perovskite LaMn3Fe4O12 (LMFO) compound using first-principle calculation. The calculated results indicated that LMFO was a thermodynamically s ...
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ConferenceIOP Conference Series: Materials Science and Engineering · March 10, 2017
As-cast Mg-Zn-Mn-Ca alloys are the candidates for medical implants. The microstructure and mechanical properties of the as-cast Mg-Zn-Mn-Ca alloys were investigated by using optical microscope (OM), X-ray diffraction (XRD) and scanning electron microscope ...
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ConferenceMaterials Science Forum · January 1, 2017
The microstructure evolution of the as-rolled Mg-3Zn-0.5Er alloy (wt.%) has been investigated. The results showed that the phase constituents of the sheet were composed of the α-Mg solid solution and the I-phase (Icosahedral quasicrystalline). The microstr ...
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ConferenceMaterials Science Forum · January 1, 2017
The microstructure and creep behaviors of cast Mg-xZn-yEr (x=3,6,9 wt.%, x/y=6) alloys were investigated by X-ray diffraction (XRD), optical microscope (OM), scanning electron microscope (SEM) and transmission electron microscope (TEM). XRD results indicat ...
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ConferenceMaterials Science Forum · January 1, 2017
The aim of this study is to enhance the interfacial bonding strength of carbon nanotubes (CNTs)/AZ91 composites by heat treatment (HT). Ternary carbides (Al2MgC2) were in situ formed and uniformly dispersed between CNTs and AZ91 matrix by 823K heat treatme ...
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Journal ArticleJournal of Alloys and Compounds · January 1, 2017
The KBiFe2O5(KBFO) compound was synthesized by using a conventional solid-state reaction method and its structural, optical, electrical, and magnetic properties were thoroughly gone through. It was found that KBFO possessed a monoclinic structure with P2/c ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · December 1, 2016
The hot deformation behaviors of as-solution Mg–xZn–yEr alloys (x/y=6, x=3.0, 4.5 and 6.0; y=0.50, 0.75 and 1.00) were investigated on Gleeble–1500 thermal simulator in a temperature range of 200–450 °C at a strain rate of 0.001–1 s−1. The true stress–stra ...
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Journal ArticleMaterials Science and Engineering: A · September 30, 2016
The effect of pre-solution (T4) treatment on microstructure and mechanical properties of the as-extruded Mg96.9Zn0.43Gd2.48Zr0.15 alloy was investigated. The results suggested that the long period stacking ordered (LPSO) structure with a lamellar-shape mor ...
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Journal ArticleRare Metals · July 1, 2016
The effects of heat treatment on microstructures and hardening response of Mg–6Zn–0.5Er–0.5Ca (wt%) alloy were investigated by optical microscope (OM), scanning electron microscope (SEM), and transmission electron microscope (TEM) in this paper. The result ...
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Journal ArticleModern Tunnelling Technology · June 1, 2016
For a station on Changchun Metro Line 1, it is necessary to monitor the deformation of a cross passage during construction by the CRD method. Considering that the erection of air ducts may impede settlement monitoring, prediction of the vault settlement fo ...
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Journal ArticleJournal of Magnesium and Alloys · June 1, 2016
The microstructure evolution of the melt-spun Mg-7Y-4Gd-5Zn-0.4Zr alloy during annealing treatment has been investigated by using X-ray diffraction (XRD), optical microscope (OM), differential scanning calorimetry (DSC) and transmission electron microscope ...
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Journal ArticleJournal of Magnesium and Alloys · June 1, 2016
The effects of trace addition of Al on the microstructure and mechanical properties of the as-extruded Mg-6Zn-0.5Er alloy were investigated in the present investigation. The results showed that the trace addition of Al affected the mechanical properties si ...
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Journal ArticleRare Metals · June 1, 2016
The effects of homogenization and isothermal aging treatment on the mechanical properties of Mg–12Gd–2Er–1Zn–0.6Zr (wt%) alloy were investigated. The precipitated long-period stacking order (LPSO) structure and the aging precipitation sequence of the condi ...
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Journal ArticleRare Metals · May 1, 2016
The microstructures of as-cast and as-solution Mg–12Gd–2Er–1Zn–0.6Zr alloys were investigated by optical microscopy (OM), scanning electron microscopy (SEM), transmission electron microscopy (TEM), high-resolution transmission electron microscopy (HRTEM), ...
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Journal ArticleJournal of Alloys and Compounds · April 25, 2016
The microstructure, texture and mechanical properties of Mg-9Zn-xEr (x = 3, 4.5 and 6 wt.%) alloys have been investigated. It was found that the main phase compositions of the present Mg-9Zn-xEr alloys were composed of I-phase and W-phase as well as the α- ...
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Journal ArticleZhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals · April 1, 2016
The Mg-Zn-Gd icosahedral quasicrystal master alloy particles was added into the AZ31 alloy by the repeated plastic working (RPW) process in order to produce AZ31 based composite reinforced by the icosahedral phase. The wear-resistance of the alloys and com ...
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ConferenceSolid State Phenomena · January 1, 2016
In this paper, in-situ AlN particles reinforced magnesium matrix composites were fabricated. The results show that the AlN phases can be in-situ synthesized in AZ91D alloy with the addition of Mg3N2. The microstructure and phases of the matrix alloys and t ...
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Journal ArticleJournal of Alloys and Compounds · January 1, 2016
Bi0.9A0.1FeO3(A = Ca, Sr and Ba) ceramics are synthesized by using the conventional solid state reaction method. X-ray diffraction analysis shows that all the ceramics have a hexagonal distorted perovskite structure with the space group R3c. It is found th ...
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Journal ArticleMaterials Science and Engineering: A · March 5, 2015
An effective two-step dispersion process for producing carbon nanotube (CNT)-reinforced magnesium alloy (CNT/AZ31) composites was developed, and the microstructure and the mechanical properties of the composite were investigated. The process includes the p ...
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Journal ArticleJournal of Magnesium and Alloys · March 1, 2015
The microstructure evolution of as-cast, as-extruded and peak-aged Mg-12Gd-2Er-1Zn-0.6Zr alloys were investigated by Optical Microscope (OM), X-ray Diffraction (XRD), Scanning Electron Microscope (SEM) and Transmission Electron Microscope (TEM). The mechan ...
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ConferenceMaterials Science Forum · January 1, 2015
The microstructure evolution of the Mg-3Zn-0.5Er -0.5Al (mass fraction, %) alloy under the different condition was investigated. The results showed that as-cast Mg-3Zn-0.5Er-0.5Al alloy mainly consisted of primary large irregular Mg4Zn7 phase and needlelik ...
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ConferenceMaterials Science Forum · January 1, 2015
An effective dispersion process to cast CNT-reinforced in a concentrated magnesium alloy (AZ31) nanocomposite was investigated in this study. The metal magnesium powder was first coated with dispersed CNTs by wet process, followed by the fabricating of CNT ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · December 1, 2014
The effect of Zn addition on microstructure and mechanical properties of the Mg-2Er alloy was investigated by X-ray diffraction (XRD) and scanning electron microscope (SEM). The results show that the alloys with 1% and 2% Zn (mass fraction) are composed of ...
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Journal ArticleJournal of Alloys and Compounds · July 25, 2014
In the present work, the microstructure, texture and mechanical properties of as-extruded Mg-xZn-xEr (x = 2, 4 and 6) alloys were investigated. The results showed that the W-phase in the as-cast alloys was destroyed during hot extrusion process. The distri ...
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ConferenceMaterials Science Forum · January 1, 2014
Grain refinement is important for improving the microstructure and mechanical properties of magnesium alloys. Carbon inoculation is an effective method of grain refinement process for magnesium alloys containing aluminum. In this paper, the C2Cl6 and graph ...
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Journal ArticleMaterials and Design · January 1, 2014
Microstructure and mechanical properties of the Mg-13Gd-5Er-1Zn-0.3Zr alloy were investigated by optimal microscope (OM), scanning electron microscopy (SEM), X-ray diffraction (XRD), energy dispersive X-ray spectrometer (EDS) and transmission electron micr ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · November 1, 2013
Tensile test of the as-cast Mg-6Zn-2Er alloy was conducted at room temperature. The results indicate that the alloy is inclined to failure when the strain reaches 5.6%. The coarse secondary phases are responsible for the failure, especially for the Mg3Zn3E ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · October 1, 2013
The microstructure and mechanical properties of the Mg-6Zn-xEr alloys in the as-cast, as-extruded and extruded-T5 states were investigated. It is found that the addition of Er has an obvious effect on improving mechanical properties of Mg-6Zn based alloys. ...
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Journal ArticleMaterials Science and Engineering: A · October 1, 2013
In the present work, the microstructure, texture and mechanical properties of the as-extruded Mg-xZn-yEr (x=3, 6 and 9; y=0.5, 1 and 1.5; x/y=6) alloys were investigated. The results showed that the I-phase in the as-cast alloys was destroyed and lots of n ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · March 1, 2013
Microstructure evolution of the cast Mg-9Gd-2Er-0.4Zr alloy during solid solution treatment at temperature of 460-520 °C for 3-12 h was investigated by using optical microscope (OM), scanning electron microscope (SEM) and transmission electron microscope ( ...
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ConferenceProceedings of SPIE - The International Society for Optical Engineering · December 1, 2012
The effects of heat treatment on microstructures and mechanical properties of the Mg-5Zn-xEr alloys (x = 0.63, 1.25, 6.3 wt.%) have been investigated by using XRD, DSC, SEM and TEM. The investigation suggested that the kinds of the secondary phases had a g ...
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Journal ArticleMaterials Science and Engineering: A · October 30, 2012
The results suggested that the repeated plastic deformation (RPW) process prior to hot extrusion has a great effect on improving ageing response of the as-extruded Mg-6Zn-1Er alloy. The rod-like Β1' phase was promoted to precipitate abundantly during isoth ...
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Journal ArticleJournal of Alloys and Compounds · May 5, 2012
The microstructure, tensile properties and creep behaviors of as-cast Mg-2Al-1Zn-xGd (x = 1, 2, 3, and 4 wt.%) alloys have been investigated. The results indicated that the addition of Gd led to the formation of a branched (Mg, Al) 3Gd phase and a cubic Al ...
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Journal ArticleMaterials and Design · March 1, 2012
The results of X-ray diffraction (XRD), differential scanning calorimetry (DSC) and microstructure observations have shown that various Zn/Er weight ratio leads to different phase compositions in the investigated alloys. The composition range for the forma ...
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Journal ArticleJournal of Rare Earths · January 1, 2012
The precipitation of the Mg-8Gd-2Er (wt.%) alloy at 200 °C was investigated by transmission electron microscopy (TEM) and X-ray diffraction (XRD). The precipitation sequence was described as supersaturated solid solution (S.S.S.S., cph)→β″(D019)→β′(bco) → ...
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Journal ArticleJournal of Rare Earths · January 1, 2012
The microstructure of the as-cast Mg44Zn44Gd 12 alloy was investigated by using X-ray diffraction (XRD), differentical scanning (DSC), scanning electron microscopy (SEM) and a detailed transmission electron microscope. The XRD, DSC and SEM results indicate ...
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ConferenceAdvanced Materials Research · January 1, 2012
Effects of V-Ti-Zr-Re containing modification powders on the mechanical properties and microstructure of low alloy steel castings by conventional normalizing, hardening and tempering processes and normalizing-free heat treatment were investigated. The resu ...
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ConferenceAdvanced Materials Research · August 1, 2011
The effect of solution treatment at 420°C on the microstructures and mechanical properties of the Mg-6Al-Zn+xSn (x=0.5, 1, 2 and 3.5 mass %) alloys have been investigated. The results showed that the Mg2Sn phase was present in both the cast and the heat-tr ...
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ConferenceAdvanced Materials Research · August 1, 2011
In this paper, the effect of Er element on ignition-proof property of Mg-Zn alloys was studied. XRD, SEM and EDS were used to investigate the ignition-proof performance and the oxidation film of the alloys. The element of Er tended to enrich in the surface ...
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ConferenceAdvanced Materials Research · June 6, 2011
The effects of Gd and Er on ignition-proof behavior of magnesium alloys were investigated. The XRD, SEM and EDS were used to study the ignition-proof performance, oxide products and oxide layer morphology of these alloys. The results indicate that the prop ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · April 1, 2011
The effects of ultrasonic treatment on the microstructure and mechanical properties of Mg-5Zn-2Er alloy at room temperature (RT) and high temperature (HT) were investigated. The microstructure and mechanical properties of the samples were studied by OM, SE ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · April 1, 2011
The microstructure and mechanical properties of the cast and extruded Mg-12Zn-1.5Er alloys were investigated. The I-phase observed in the cast Mg-12Zn-1.5Er alloy was broken during hot extrusion. The microstructure of the alloy was refined due to the dynam ...
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ConferenceAdvanced Materials Research · January 11, 2011
Ultrasonic vibration was introduced into the molten AZ91 alloy in this paper. The effects of ultrasound power (from 0 to 900W) on the microstructure and mechanical properties of AZ91 alloy were investigated. The results show that the microstructure, hardne ...
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ConferenceAdvanced Materials Research · January 3, 2011
In this paper microstructures and mechanical properties of the Mg-xGd-Er (x=5, 7, 9 and 11wt.%) alloys were characterized and discussed. The results show that the alloys with different Gd were mainly composed of α-Mg solid solution, semi-continuous network ...
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ConferenceAdvanced Materials Research · January 3, 2011
The kinetics of Mg2Sn synthesis reaction was studied under isothermal condition in the present paper. Results indicated that the isothermal reaction of Mg2Sn was controlled by two reactive mechanisms: the nucleation and growth control in the first stage co ...
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Journal ArticleMaterials Science and Engineering: A · January 1, 2011
In order to improve the mechanical properties of AZ31 alloys, the repeated plastic working process was employed to fabricate the AZ31-based composites reinforced with stable icosahedral quasicrystal particles. The microstructure of the composites has been ...
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ConferenceMaterials Science Forum · January 1, 2011
Magnesium-based composites reinforced with stable icosahedral quasicrystal particles have been fabricated via Repeated Plastic Working (RPW) process. The microstructure of the composites has been investigated by XRD, SEM, TEM and HREM, and its mechanical p ...
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ConferenceMaterials Science Forum · January 1, 2011
The microstructures and mechanical properties of the Mg-Zn-Er alloys have been investigated. The results show that the alloying elements (Zn/Er) with different ratio have a great effect on the microstructure and mechanical properties of the magnesium alloy ...
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ConferenceMaterials Science Forum · January 1, 2011
The Mg-5Zn-2.5Er matrix composite reinforced with the in-situ synthesized Mg2Si second phase particles was fabricated via repeated plastic working (RPW) process. The microstructures and the nanocrystals in the composite have been investigated using transmi ...
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ConferenceMaterials Science Forum · January 1, 2011
The repeated plastic working deformation(RPW) process can reduce grain size of a Mg alloy from 50-100 um to 10-500 nm, but the mechanism responsible for it has not been clear up to now. In the present paper, the effect of RPW deformation process on the gra ...
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Journal ArticleRare Metals · October 1, 2010
The creep mechanism of as-cast Mg-6Al-6Nd alloy was studied. The stress exponent for creep is 5.8 under the applied stresses of 50-70 MPa at 175°C. The activation energy for creep is 189 kJ•mol-1 under the applied stress of 70 MPa in the range of 150-200°C ...
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Journal ArticleXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering · October 1, 2010
The effects of Nd on the tensile properties of Mg-6Al as-cast alloy were studied. Results show that the yielding strengths of Mg-6Al-xNd (x=0, 2, 4, 6; mass fraction) alloys at room temperature and 175°C increased with the Nd content increasing and reached ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · September 1, 2010
SiC nanoparticles reinforced magnesium matrix composites were fabricated by ultrasonic method. The AZ91 alloy and SiC nanoparticles with the average diameter of 50 nm were used as the matrix alloy and the reinforcement, respectively. The addition of nanopa ...
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Journal ArticleTransactions of Nonferrous Metals Society of China (English Edition) · July 1, 2010
The creep behaviors of as-cast Mg-5Zn-2.5Er alloy (mass fraction, ), under various applied stresses (50-70 MPa) and creep temperatures (150-200 °C) for 100 h, were investigated. The stress exponent n is in the range of 1.5-5.8, and the activation energy Qc ...
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Journal ArticleTezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys · July 1, 2010
Eilects ol varied ultrasonic powers and time on microstructure and properties of AZ31 magnesium alloy were investigated by introducing ultrasonic into the melt, and refining mechanism of ultrasonic on grain size in the AZ31 magnesium alloy was described. T ...
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Journal ArticleZhongguo Youse Jinshu Xuebao/Chinese Journal of Nonferrous Metals · June 1, 2010
The Mg2Si reinforced Mg-2Al-Zn-2Gd composite was synthesized by in-situ solid state reaction and repeated plastic deformation (RPW) process. The XRD, SEM and TEM analysis results indicate that the RPW method can significantly decrease the second phase part ...
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Journal ArticleTezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys · June 1, 2010
Mg2Si/Mg-5Zn-2. 5Er composites were fabricated by repeated plastic working (RPW) via solid state reaction and hot extrusion. Number of RPW was 100, 200, 300 and 400, respectively. Effects of RPW times on microstructure and mechanical properties of the comp ...
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Journal ArticleTezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys · April 23, 2010
Effects of introducing ultrasonic temperature on microstructure and properties of Mg-Zn-Er alloy prepared by high intensity ultrasonic melt treatment were analyzed. The results indicate that as-cast microstructure of the alloy is converted from coarse dend ...
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Journal ArticleMaterials Science and Engineering: A · February 15, 2010
The tensile and tensile creep properties of the as-cast Mg-5Zn-2.5Er (in wt.%) alloy strengthened by icosahedral quasicrystalline phase (I-phase) were studied. The Mg-5Zn-2.5Er alloy had better tensile properties both at room temperature and 175 °C than AE ...
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Journal ArticleRare Metals · February 1, 2010
The microstructure and strengthening mechanisms of as-cast Mg-6Al-6Nd alloy were studied. The results show that the addition of 6 wt.% Nd into Mg-6Al alloy leads to the precipitation of Al11Nd3 and Al 2Nd phases and decrease in the content of Al solid solu ...
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Journal ArticleZhuzao/Foundry · November 1, 2009
Mg-Zn-Er alloy was prepared by high-intensity ultrasonic melt treatment. The effects of the ultrasonic treatment time and ultrasonic output power on microstructure and properties of Mg-Zn-Er alloy were investigated. The results show that with increase in t ...
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Journal ArticleRare Metals · June 1, 2009
The microstructure of an as-cast Mg-Zn-Er alloy was investigated through scanning electron microscopy (SEM) and transmission electron microscopy (TEM) equipped with energy dispersive spectroscopy (EDS). The results indicate that two different second phases ...
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Journal ArticleXiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering · March 1, 2009
In this paper, the fabrication methods of magnesium matrix composites were introduced and the new fabrication process was emphasized. The effects of the fabrication processes on the composition, structure and properties of the composites were analyzed. Dev ...
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Journal ArticleJournal of Rare Earths · January 1, 2009
The effect of aging on microstructure of Mg-Zn-Er alloys at 473 K was investigated using hardness measurement, scanning electron microscopy (SEM) and transmission electron microscopy (TEM). The results indicated that both Mg3.8Zn1.5Er and Mg5Zn2.0Er alloys ...
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Journal ArticleTezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys · August 1, 2007
The SiC nano-particle reinforced AM60 magnesium alloys were fabricated by the semi-solid process. The effects of SiC nano-particles on micro-structure and mechanical properties of AM60 alloy have been investigated by optical microscope, Brinell hardness te ...
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Journal ArticleTezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys · June 1, 2006
The electro-negativities, Gibbs free energy of oxidation reaction and physical properties of some alloying elements and their oxides were compared. It is pointed out that alkaline earth and rare earth elements, especially Be element, are dominant ignition- ...
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Journal ArticleTezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys · April 1, 2006
Several kinds of grain refinement processes for Mg-Al series alloy were surveyed. Effects of C2Cl6 on the composition, density, microstructure and mechanical properties of the AM60 alloy were investigated by XRF spectrometer, optical microscope, Brinell ha ...
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Journal ArticleZhuzao/Foundry · February 1, 2006
The microstructure of magnesium alloy melt under different disturbed treatments in semisolid state was studied. The results show that blowing argon into refined and modified molten magnesium alloy in semisolid state can obtain non-dendritic structure, the ...
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ConferenceSolid State Phenomena · January 1, 2006
In this paper, with a newly self-developed rotating barrel rheomoulding machine(RBRM), microstructures and mechanical properties of rheo-die casting A356 alloy were studied. In order to clearly show the characteristic of rheo-die casting, liquid die castin ...
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ConferenceSolid State Phenomena · January 1, 2006
In this paper, SiC nanoparticles reinforced AM60 alloys were fabricated by semisolid process with pretreatment of SiC nanoparticles. The microstructure, hardness and mechanical properties of the alloys have been investigated. The X-ray photoelectron spectr ...
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ConferenceSolid State Phenomena · January 1, 2006
In this paper the microstructure evolution of AZ91HP magnesium alloy casts produced under different disturbing treatment conditions such as non-disturbing, argon blowing and mechanical stirring in semi-solid state after holding a short time was studied. Th ...
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Journal ArticleSolid State Phenomena · January 1, 2006
In this paper the microstructure evolution of AZ91HP magnesium alloy casts produced under different disturbing treatment conditions such as non-disturbing, argon blowing and mechanical stirring in semi-solid state after holding a short time was studied. Th ...
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Journal ArticleSolid State Phenomena · January 1, 2006
In this paper, SiC nanoparticles reinforced AM60 alloys were fabricated by semisolid process with pretreatment of SiC nanoparticles. The microstructure, hardness and mechanical properties of the alloys have been investigated. The X-ray photoelectron spectr ...
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Journal ArticleSolid State Phenomena · January 1, 2006
In this paper, with a newly self-developed rotating barrel rheomoulding machine(RBRM), microstructures and mechanical properties of rheo-die casting A356 alloy were studied. In order to clearly show the characteristic of rheo-die casting, liquid die castin ...
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Journal ArticleTezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys · January 1, 2006
The morphology of grain in semi-solid slurry and its forming mechanism as well as 3D geometry shape were approached by means of a new self-developed rotating barrel rheomolding equipment with different processing parameters. It is found that the grain morp ...
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Journal ArticleZhuzao Jishu/Foundry Technology · January 1, 2006
Variable law of apparent viscosity of semi-solid AZ91D slurry in steady and transient rheological state was studied by utilizing a newly self-developed rotating barrel semi-solid slurry preparation machine (RBRM). The results show that shearing rate, solid ...
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Journal ArticleTezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys · November 1, 2005
Pretreated nano-SiC particle reinforced AM60 magnesium alloy was fabricated by stirring-smelting casting. Effects of nano-SiC particle on the microstructure, mechanical properties and hardness of the Mg alloy were researched. The results show that nano-SiC ...
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Journal ArticleTezhong Zhuzao Ji Youse Hejin/Special Casting and Nonferrous Alloys · October 1, 2005
According to the characteristics of simple shape and thick-walled of the Mg alloy beam-barrel parts, a direct squeezing casting schematic was set to meet the requirements of high-strength and ductility. The heat treatable beam-barrel Mg alloy parts were ma ...
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ConferenceMaterials Science Forum · January 1, 2005
Magnesium alloys offer advantages of low density, high specific strength, machinability and availability. So it has been used more and more in many fields, such as automobile, communication etc. In this paper, grain refinement process and SiC nanoparticles ...
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