Compression Deformation Behavior of AZ91D Magnesium Alloy at Elevated Temperature

被引：1
|
作者：
Chai Yuesheng [1 ]
Chen Yong-zhe [1 ]
Liu Wen-feng [1 ]
Sun Gang [1 ]
机构：
[1] Taiyuan Univ Sci & Technol, Shanxi Magnesium & Magnesium Alloy Engineer Techn, Taiyuan 030024, Shanxi, Peoples R China
来源：
FRONTIERS OF MECHANICAL ENGINEERING AND MATERIALS ENGINEERING, PTS 1 AND 2 | 2012年 / 184-185卷
关键词：
Magnesium alloy; Hot compression deformation; Deformation activation energy; HOT DEFORMATION;
D O I：
10.4028/www.scientific.net/AMM.184-185.914
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
Hot compression tests of AZ91D magnesium alloy were performed on Gleeble1500 ranging from 0.001 to 1 s(-1) and deformation temperature ranging from 200 to 400 degrees C. The results show that flow stress is dependent on deformation temperature and strain rates. When strain rate is a constant, flow stress decreases with the increasing deformation temperature. Meanwhile, as deformation temperature is a constant, flow stress increases with the increase of strain rate, which can be demonstrated by a Zener-hollomon parameter in the hyperbolic-sine-type equation during hot compression deformation. The hot deformation activation energy is 176.01kJ/mol and the stress exponent is 7.85 during hot compression deformation of AZ91D magnesium alloy.
引用
收藏
页码：914 / 919
页数：6
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