Microstructure and mechanical properties of as-cast AZ31 with the addition of Sb

被引：26
|
作者：
Liu, HongBin [1 ]
Gong, NingNing [1 ]
Pang, Lei [1 ]
Zhang, XingGuo [1 ]
机构：
[1] Dalian Univ Technol, Sch Mat Sci & Engn, State Key Lab Mat Surface Modificat Laser Ion & E, Dalian 116024, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2008年 / 497卷 / 1-2期
关键词：
AZ31; Antimony; Microstructure; Tensile strength; Elongation;
D O I：
10.1016/j.msea.2008.07.010
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Microstructures and mechanical properties of as-cast AZ31 with Sb addition (0.3 wt.%, 0.45 wt.% and 0.6 wt.%) were investigated. The results show that the microstructure of AZ31 with Sb addition consists of two phases, equiaxed grains of alpha-Mg with a bigger grain size (about 200 mu m) and rod-shaped precipitates Of alpha-Mg3Sb2, the stable intermetallic compounds with high melting point, homogenously distributed in rnatrix, which is significantly different from that of AZ31. Tensile tests indicated that the tensile strength and elongation of alloys with Sb addition appreciably decrease with the increase in Sb addition because of stress concentration occurring in the ends of rod-shaped precipitates. (C) 2008 Elsevier B.V. All rights reserved.
引用
收藏
页码：254 / 259
页数：6
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