Microstructures and Mechanical Properties of Mg-9Zn-Zr Magnesium Alloys

被引：6

作者：

Zhang, Jing ^{[1
,2
]}

Ma, Qi ^{[2
]}

Pan, Fusheng ^{[1
,2
]}

Zuo, Rulin ^{[2
]}

机构：

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

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

来源：

PRICM 7, PTS 1-3 | 2010年 / 654-656卷

基金：

中国国家自然科学基金;

关键词：

Mg-Zn-Zr alloys; rare earth; microstructure; mechanical properties;

D O I：

10.4028/www.scientific.net/MSF.654-656.643

中图分类号：

TQ174 [陶瓷工业]; TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The effects of rare earth addtition of Er on the microstructures and mechanical properties of Mg-9Zn-Zr magnesium alloys were examined. The results showed that the addition of Er resulted in the formation of two types of thermally stable Er-bearing compounds with distinct Zn/Er ratio. The volume fraction of the second-phase particles increased with the increase of Er addition. 2% Er could refine the as-cast microstructure effectively. The yield strength generally increased and the elongation decreased gradually. 0.5% Er-bearing alloy had optimum combined mechanical properties, with the yield strength, tensile strength and elongation being 313MPa, 366MPa and 22%, respectively. Furthermore, addition of Er brought about homogenous deformation behaviour and recrystallization behaviour to the alloy.

引用

页码：643 / +

页数：2

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