Microstructures, mechanical properties and corrosion behaviors of Mg-Y-Zn-Zr alloys with specific Y/Zn mole ratios

被引：0
|
作者：
Zhang, Zhiqiang [1 ]
Liu, Xuan [1 ]
Hu, Wenyi [1 ]
Li, Jiahao [1 ]
Le, Qichi [1 ]
Bao, Lei [1 ]
Zhu, Zhenjia [1 ]
Cui, Jianzhong [1 ]
机构：
[1] Zhang, Zhiqiang
[2] Liu, Xuan
[3] Hu, Wenyi
[4] Li, Jiahao
[5] Le, Qichi
[6] Bao, Lei
[7] Zhu, Zhenjia
[8] Cui, Jianzhong
来源：
Zhang, Zhiqiang | 1600年 / Elsevier Ltd卷 / 624期
关键词：
Three Mg-Y-Zn-Zr alloys have been designed with specific Y/Zn mole ratios around 1.32 for the purpose of high performance. Microstructures; mechanical properties and corrosion behaviors of the alloys have been studied. A wide distribution of compact and thick X-phase could promote the mechanical properties and corrosion resistance drastically. Moreover; a solidification behavior was proposed to understand the alternant distribution of X-phase (Mg12YZn) and W-phase (MgY2Zn3). After hot extrusion; the corrosion resistance and mechanical properties of the alloys are strongly improved; due to the grain refinement and dispersive distribution of X-phase. Among the designed alloys; a high performance MgY3.8Zn3Zr0.18 alloy was prepared by conventional casting and subsequent hot extrusion process. It owns an ultimate and yield strength of 420 MPa and 300 MPa; respectively; as well as the best corrosion resistance. ©2014 Elsevier B.V;
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页码：100 / 107
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