Low temperature superplasticity in a magnesium-based composite

被引：39
|
作者：
Watanabe, H
Mukai, T
Nieh, TG
Higashi, K
机构：
[1] Osaka Municipal Tech Res Inst, Joto Ku, Osaka 5368553, Japan
[2] Univ Calif Lawrence Livermore Natl Lab, Livermore, CA 94551 USA
[3] Univ Osaka Prefecture, Coll Engn, Sakai, Osaka 5998531, Japan
来源：
SCRIPTA MATERIALIA | 2000年 / 42卷 / 03期
关键词：
magnesium-based composite; low temperature superplasticity; elongation-to-failure; stress exponent; activation energy;
D O I：
10.1016/S1359-6462(99)00357-7
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The superplastic behavior of a particulate-reinforced ZK60 magnesium alloy with an average grain size of 1.7 μm was investigated at about one half of the melting point. The composite exhibited superplasticity with an elongation-to-failure of over 300%. The strain rate was proportional to the stress raised to a second power. The activation energies at both high temperatures (598-773 K) and low temperatures (448-475 K) approximated that for grain boundary diffusion in magnesium.
引用
收藏
页码：249 / 255
页数：7
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