Microstructure and Mechanical Properties of Mg-Er-Cu/Ni/Zn Alloys with Long Period Stacking Ordered Phases

被引：4

作者：

Zhang, Lei ^{[1
]}

Zhang, Shuaijie ^{[1
]}

Ouyang, Kangxin ^{[1
]}

Zhou, Yihuan ^{[1
]}

Huang, H. ^{[1
]}

Xu, Pian ^{[1
]}

机构：

[1] Nanchang Hangkong Univ, Natl Def Key Disciplines Lab Light Alloy Proc Sci, Nanchang 330063, Jiangxi, Peoples R China

来源：

ADVANCED ENGINEERING MATERIALS | 2021年 / 23卷 / 10期

关键词：

long period stacking ordered; mechanical properties; Mg alloys; microstructure; Y-ALLOY; SOLID-SOLUTION; ZN; NI; STRENGTH; GD; DEFORMATION; EQUILIBRIA; STABILITY; BINARY;

D O I：

10.1002/adem.202100368

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The microstructure and mechanical properties of as-cast Mg96Er3Cu1, Mg96Er3Ni1, and Mg96Er3Zn1 alloys prepared by conventional ingot metallurgy are investigated. Results show that the bulk 18R long period stacking ordered (LPSO) phases in all three as-cast alloys solidify directly from the melt. The grain size of the Mg96Er3Zn1 alloy is the smallest; the volume fraction of the LPSO phase in the Mg96Er3Ni1 alloy is the highest in all three alloys due to negligible Ni solid solubility in alpha-Mg. The thermal stability of the 18R LPSO phase in the as-cast Mg96Er3Ni1 alloy is much higher than in the other two alloys. Tensile tests indicate that the as-cast Mg96Er3Zn1 alloy shows the best ductility; the as-cast Mg96Er3Ni1 alloy possesses the highest tensile strength, and the ultimate tensile strength and yield tensile strength are 245 and 149 MPa, respectively, accompanied by a good elongation of 7.1%.

引用

页数：9

共 42 条

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