首页|Microstructures and mechanical properties of a hot-extruded Mg?8Zn?6Al?1Gd (wt%) alloy
Microstructures and mechanical properties of a hot-extruded Mg?8Zn?6Al?1Gd (wt%) alloy
扫码查看
点击上方二维码区域，可以放大扫码查看
原文链接
NSTL
Elsevier
? 2022 Elsevier B.V.Microstructural evolution and mechanical properties of a Mg?8Zn?6Al?1Gd (wt%) alloy were thoroughly investigated in this work. The results indicate that the dominant intermetallic phases in the as-cast sample are ?-Al2Mg5Zn2, τ-Mg32(Al,Zn)49, i-Mg44Al15Zn41 and Al2Gd phases and almost free Gd was detected in the former three phases. After extrusion, the sample has a fully recrystallized microstructure with the average grain size being ~1.5 μm, and exhibits a weak rare earth texture. Additionally, fine particles were approximately homogeneously dispersed in the fine-grained structure. Most of them are quasicrystal phase (i-phase) but have no identical orientation relationship with Mg matrix regardless of whether they distribute at grain boundaries or inside grains. Finally, the as-extruded sample exhibits good strength-ductility balance in both tension and compression and simultaneously has a slight reverse tension/compression asymmetry. Microstructural observations indicate that the excellent mechanical performance of the studied alloy is highly related to its fine grains, weak RE texture, and numerous homogeneously distributed fine particles.
Magnesium alloyMechanical propertiesMicrostructureStrengthening mechanismTransmission electron microscopy (TEM)
Yang Q.、Qiu X.、Meng F.、Xie Z.、Lv S.
展开 >
State Key Laboratory of Rare Earth Resource Utilization Changchun Institute of Applied Chemistry Chinese Academy of Sciences
School of Materials Science and Engineering Changchun University of Science and Technology
NSTL
Elsevier
