Effect of grain refinement of magnesium alloy AZ31 by severe plastic deformation on material characteristics

被引：99

作者：

Kang, S. H. ^{[1
]}

Lee, Y. S. ^{[1
]}

Lee, J. H. ^{[1
]}

机构：

[1] Korea Inst Mat Sci, Appl Plast Res Grp, Dept Mat Proc, Chang Won 641831, Gyeongnam, South Korea

来源：

JOURNAL OF MATERIALS PROCESSING TECHNOLOGY | 2008年 / 201卷 / 1-3期

关键词：

magnesium alloy; grain refinement; material characteristics; impeller;

D O I：

10.1016/j.jmatprotec.2007.11.305

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

This work was focused on the grain refinement of magnesium alloy AZ31 by the equal channel angular pressing (ECAP) and investigation its effect on the microstructural change and mechanical properties. From the experimental works, it was observed that the fine and equiaxed grains with less than 3.0 mu m were achieved. it was also found out that the decreasing temperature gave the finer grain and higher microhardness. In addition, in order to find the effect of grain size on the mechanical properties, tensile tests were carried out to analyze the changes in the yield and tensile strength and fracture elongation. From tensile tests, the fracture elongation increased with decreasing grain size, while the yield and tensile strength decreased. Finally, a forged impeller using grain refined magnesium alloy at the optimal processing condition was shown. (c) 2008 Published by Elsevier B.V.

引用

页码：436 / 440

页数：5

共 6 条

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