Compelling mechanical properties of carbon nanotubes reinforced pure magnesium composite by effective interface bonding of Mg2 Ni
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 and Mg matrix. Results indicated that the yield and ultimate tensile strength of 2.0 wt. % Ni-CNTs/Mg composite were 278.3 MPa and 304.5 MPa, respectively, showing 77% and 48% increase in comparison with those of 2.0 wt. % CNTs/Mg composite. The remarkably enhanced mechanical properties were attributed to the strong interface bonding due to the in-situ formed nano-Mg2Ni phase. The corresponding strengthening mechanisms were regarded as the coupling interface effect of the coherent interface and the interstitial solid solution. Moreover, the CNTs acted as a bridging role in load transfer and obstructed the growth of cracks in Ni-CNTs/Mg composites.
Duke Scholars
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Related Subject Headings
- Materials
- 5104 Condensed matter physics
- 4016 Materials engineering
- 0914 Resources Engineering and Extractive Metallurgy
- 0912 Materials Engineering
- 0204 Condensed Matter Physics
Citation
Published In
DOI
ISSN
Publication Date
Volume
Start / End Page
Related Subject Headings
- Materials
- 5104 Condensed matter physics
- 4016 Materials engineering
- 0914 Resources Engineering and Extractive Metallurgy
- 0912 Materials Engineering
- 0204 Condensed Matter Physics