About this Abstract |
Meeting |
12th International Conference on Magnesium Alloys and their Applications (Mg2021)
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Symposium
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12th International Conference on Magnesium Alloys and their Applications (Mg 2021)
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Presentation Title |
Effect of Gd and Nd Additions on the Mechanical Behaviors of Extruded Mg Alloys |
Author(s) |
Yuling Xu, Shiwei Wang, Yuye Wang, Lü Xiao, Norbert Hort |
On-Site Speaker (Planned) |
Yuling Xu |
Abstract Scope |
The influence of alloy elements and heat treatment on the microstructure and mechanical behaviors of four extruded Mg–Gd–Nd ternary alloys are discussed in this study. The grain sizes of extruded alloys decrease from 26 to 5 μm with alloy content increasing after extrusion. The mechanical test results show that both Gd and Nd have positive effect on the hardness, yield strength and Young’s modulus. The ultimate tensile strength (UTS) is enhanced by Gd, but decreased with Nd content. The elongation of alloys is lower with higher alloy elements. Those extruded alloys were aged for 200 h in 200℃. The Young’s moduli are decreased by ageing treatment. Combined with microstructure study, part of reinforcement which identified as Mg5(Gd,Nd) phase is solved in Mg matrix. On the other hand, the β’ precipitates were distributed in grains which leads the great improvements of yield strength. |
Proceedings Inclusion? |
Planned: At-meeting proceedings |