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Microstructural control and hardening response of Mg–6Zn–0.5Er–0.5Ca alloy

Publication ,  Journal Article
Zheng, XB; Liu, K; Wang, ZH; Li, SB; Du, WB
Published in: Rare 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 results show that the Mg–6Zn–0.5Er–0.5Ca alloy contains Mg3Zn6Er1 quasicrystalline phase (I-phase) and Ca2Mg6Zn3 phase under as-cast condition. Most of the Ca2Mg6Zn3 phases and I-phases dissolve into matrix during heat treatment at 475 °C for 5 h. After the as-solution alloy was aged at 175 °C for 36 h, a large amount of MgZn2 precipitate with several nanometers precipitate. It is suggested that the trace addition of Ca results in refining the size of the precipitate, and the presence of the nanoscale MgZn2 phase is the main factor to improve the peak-aged hardness greatly to 87 HV, which increases about 40 % compared with that of as-cast alloy.

Duke Scholars

Published In

Rare Metals

DOI

EISSN

1867-7185

ISSN

1001-0521

Publication Date

July 1, 2016

Volume

35

Issue

7

Start / End Page

526 / 531

Related Subject Headings

  • Materials
  • 0914 Resources Engineering and Extractive Metallurgy
 

Citation

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Zheng, X. B., Liu, K., Wang, Z. H., Li, S. B., & Du, W. B. (2016). Microstructural control and hardening response of Mg–6Zn–0.5Er–0.5Ca alloy. Rare Metals, 35(7), 526–531. https://doi.org/10.1007/s12598-015-0462-0
Zheng, X. B., K. Liu, Z. H. Wang, S. B. Li, and W. B. Du. “Microstructural control and hardening response of Mg–6Zn–0.5Er–0.5Ca alloy.” Rare Metals 35, no. 7 (July 1, 2016): 526–31. https://doi.org/10.1007/s12598-015-0462-0.
Zheng XB, Liu K, Wang ZH, Li SB, Du WB. Microstructural control and hardening response of Mg–6Zn–0.5Er–0.5Ca alloy. Rare Metals. 2016 Jul 1;35(7):526–31.
Zheng, X. B., et al. “Microstructural control and hardening response of Mg–6Zn–0.5Er–0.5Ca alloy.” Rare Metals, vol. 35, no. 7, July 2016, pp. 526–31. Scopus, doi:10.1007/s12598-015-0462-0.
Zheng XB, Liu K, Wang ZH, Li SB, Du WB. Microstructural control and hardening response of Mg–6Zn–0.5Er–0.5Ca alloy. Rare Metals. 2016 Jul 1;35(7):526–531.
Journal cover image

Published In

Rare Metals

DOI

EISSN

1867-7185

ISSN

1001-0521

Publication Date

July 1, 2016

Volume

35

Issue

7

Start / End Page

526 / 531

Related Subject Headings

  • Materials
  • 0914 Resources Engineering and Extractive Metallurgy