The effects of Ca and Mn on the microstructure, texture and mechanical properties of Mg-4 Zn alloy

被引：8
|
作者：
Chunquan Liu [1 ]
Xianhua Chen [1 ,2 ,3 ]
Jiao Chen [1 ]
Andrej Atrens [4 ]
Fusheng Pan [1 ,2 ]
机构：
[1] International Joint Laboratory for Light Alloys (MOE), College of Materials Science and Engineering, Chongqing University
[2] National Engineering Research Center for Magnesium Alloys, Chongqing University
[3] Shenyang National Laboratory for Materials Science, Institute of Metal Research, Chinese Academy of Scihences
[4] School of Mechanical and Mining Engineering, The University of Queensland
来源：
Journal of Magnesium and Alloys | 2021年 / 9卷 / 03期
基金：
中国国家自然科学基金; 国家重点研发计划;
关键词：
D O I：
暂无
中图分类号：
TG146.22 [];
学科分类号：
摘要：
The microstructural evolution,texture and mechanical properties of nine Mg-4Zn-x Ca-y Mn alloys (x=0.3,0.6,1.0;y=0.2,0.3,0.7 wt.%)were investigated systematically.Alloying with Ca and Mn refined the grains of the extruded sheets and increased the un DRX fraction.Mn could be the heterogeneous nucleation site of Ca2Mg6Zn3phase because of a good atom matching at the orientation relationship of ■.The traditional texture weakening effect of Ca was strongly decreased for the simultaneously addition of Mn.With increasing Ca and Mn concentration,the strength increased and ductility decreased.Mg-4Zn-0.6Ca-0.7Mn exhibited a good combination of ultimate tensile strength (320 MPa),yield strength (286 MPa) and elongation (16%).A model of strengthening indicated that grain boundary strengthening and precipitate strengthening made a large contribution to the strength of Mg-4Zn-0.6Ca-0.7Mn.In addition,the dynamic recrystallization,texture modification and the strengthening effect from different parts also have been analyzed in detail.
引用
收藏
页码：1084 / 1097
页数：14
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