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

页码：914 / 919

页数：6