Processing and mechanical properties of fine-grained magnesium alloys

被引:348
作者
Kubota, K
Mabuchi, M
Higashi, K
机构
[1] Agcy Ind Sci & Technol, Natl Ind Res Inst Nagoya, Dept Mat Proc, Kita Ku, Nagoya, Aichi 4628510, Japan
[2] Mitsui Min & Smelting Co Ltd, Corp R&D Ctr, Ageo, Saitama 362, Japan
[3] Univ Osaka Prefecture, Coll Engn, Dept Met & Mat Sci, Sakai, Osaka 5998531, Japan
关键词
D O I
10.1023/A:1004561205627
中图分类号
T [工业技术];
学科分类号
08 ;
摘要
Magnesium alloys are promising light structural materials. The present paper focuses on fine-grained magnesium-based materials. Grain refinement is attained by hot working without additional treatments. Also, a very small grain size of less than 1 mu m is obtained by equal channel angular extrusion. A good combination of high strength and high ductility at room temperature is attained by grain refinement. Furthermore, fine-grained magnesium-based materials exhibit superplastic behavior at high stain rates (greater than or equal to 10(-1) s(-1)) or low temperatures (less than or equal to 473 K). These point out the importance of grain refinement to process magnesium-based materials with excellent mechanical properties. (C) 1999 Kluwer Academic Publishers.
引用
收藏
页码:2255 / 2262
页数:8
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