Thermomechanical processing and superplasticity of AZ91 magnesium alloy

被引：0
|
作者：
Chen, RS [1 ]
Blandin, JJ
Suéry, M
Wang, QD
Han, EH
机构：
[1] Chinese Acad Sci, Inst Met Res, State Key Lab Corros & Protect, Shenyang 110016, Peoples R China
[2] ENSPG, UMR CNRS 5010, INPG, F-38402 St Martin Dheres, France
[3] Shanghai Jiao Tong Univ, Sch Mat Sci & Engn, Natl Res Ctr Light Alloy Net Forming Engn, Shanghai 200030, Peoples R China
来源：
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY | 2004年 / 20卷 / 03期
关键词：
magnesium alloy; thermo-mechanical treatment; superplasticity; mechanical properties;
D O I：
暂无
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The effect of extrusion on grain refinement has been studied in the AZ91 cast ingots. It is found that grain size smaller than 10 mum can be obtained by the extrusion processing. Vickers hardness measurements were also carried out to evaluate the effect of these processes on the room temperature mechanical properties. The experimental results of high temperature tensile tests revealed that the stress was inversely proportional to the square of the grain size and that the activation energy for superplastic flow was higher than that for grain boundary diffusion.
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页码：295 / 297
页数：3
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