Effects of Ca addition on the microstructure and mechanical properties of AZ91magnesium alloy

被引：200

作者：

Wang, QD ^{[1
]}

Chen, WD

Zeng, XQ

Lu, YZ

Ding, WJ

Zhu, YP

Xu, XP

Mabuchi, M

机构：

[1] Shanghai Jiao Tong Univ, State Key Lab Met Matrix Composites, Shanghai 200030, Peoples R China

[2] Natl Ind Res Inst Nagoya, Kita Ku, Nagoya, Aichi 4628510, Japan

来源：

JOURNAL OF MATERIALS SCIENCE | 2001年 / 36卷 / 12期

基金：

中国国家自然科学基金;

关键词：

D O I：

10.1023/A:1017927109291

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

The effects of Ca addition on the microstructure and mechanical properties of AZ91 magnesium alloy have been studied. The results show that the Ca addition can refine the microstructure, reduce the quantity of Mg17Al12 phase, and form new Al2Ca phase in AZ91 magnesium alloy. With the Ca addition, the tensile strength and elongation of AZ91magnesium alloy at ambient temperature are reduced, whereas Ca addition confers elevated temperature strengthening on AZ91 magnesium alloy. The tensile strength at 150 degreesC increases with increasing Ca content. The impact toughness of AZ91magnesium alloy increases, and then declines as the Ca content increases. The tensile and impact fractographs exhibit intergranular fracture features, Ca addition changes the pattern and quantity of tearing ridge, with radial or parallel tearing ridge increasing, tensile strength, elongation and impact toughness reduce. (C) 2001 Kluwer Academic Publishers.

引用

页码：3035 / 3040

页数：6

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