Effect of Bi on Microstructure and Mechanical Properties of Extruded AZ80-2Sn Magnesium Alloy

被引：2

作者：

Xue, Hansong ^{[1
,2
]}

Li, Xinyu ^{[1
]}

Zhang, Weina ^{[1
]}

Xing, Zhihui ^{[1
]}

Rao, Jinsong ^{[1
]}

Pan, FuSheng ^{[1
,2
]}

机构：

[1] Chongqing Univ, Coll Mat Sci & Engn, Chongqing 400044, Peoples R China

[2] Chongqing Univ, Natl Engn Res Ctr Magnesium Alloys, Chongqing 400044, Peoples R China

来源：

HIGH TEMPERATURE MATERIALS AND PROCESSES | 2018年 / 37卷 / 01期

基金：

中国国家自然科学基金;

关键词：

magnesium alloy; bismuth; microstructure; mechanical properties; BEHAVIOR; ADDITIONS; ANTIMONY; BISMUTH; RE;

D O I：

10.1515/htmp-2016-0045

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of Bi on the microstructure and mechanical properties of AZ80-2Sn alloy were investigated. The results show that the addition of Bi within the as-cast AZ80-2Sn alloy promotes the formation of Mg3Bi2 phase, which can refine the grains and make the eutectic phases discontinuous. The addition of 0.5% Bi within the as-extruded AZ80-2Sn alloy, the average grain size decreases to 12 mu m and the fine granular Mg17Al12 and Mg3Bi2 phases are dispersed in the mu-Mg matrix. With an increase in Bi content, the Mg17Al12 and Mg3Bi2 phases become coarsened and the grain size increases. The asextruded QAZ80-2Sn-0.5% Bi alloy has the optimal properties, and the ultimate tensile strength, yield strength and elongation are 379.6 MPa, 247.1 MPa and 14.8%, respectively.

引用

页码：97 / 103

页数：7

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