Flow stress of die-cast AZ91D magnesium alloy under hot compression deformation

被引：0

作者：

You, Guoqiang ^{[1
,2
]}

Zuo, Xudong ^{[1
]}

Tan, Xia ^{[1
]}

Wang, Xiangjie ^{[1
]}

Long, Siyuan ^{[1
,2
]}

机构：

[1] Chongqing University, Chongqing 400045, China

[2] National Engineering Research Center for Magnesium Alloys, Chongqing 400044, China

来源：

Xiyou Jinshu Cailiao Yu Gongcheng/Rare Metal Materials and Engineering | 2013年 / 42卷 / 09期

关键词：

Magnesium alloys - Dies - Strain rate - Compression testing - Hyperbolic functions - Constitutive equations - Plastic flow;

D O I：

暂无

中图分类号：

学科分类号：

摘要：

Hot compression tests of die-cast AZ91D magnesium alloy were performed on Gleeblle-1500D at strain rates ranging in 0.01~10 s-1 and deformation temperatures ranging in 250~450°C. The constitutive equation, Ε=1.41×1012 [sinh(0.014σ)]5.295exp (-159 449.509/RT), which is described by Zener-Hollomom parameters for hot compression deformation of die-cast AZ91D magnesium alloy was established. Compared to gravity cast AZ91D magnesium alloy, the deformation activation energy of die-cast AZ91D magnesium alloy, Q=159.45 kJ·mol-1, determined by hyperbolic sine function is lower. Copyright © 2013 Northwest Institute for Nonferrous Metal Research. Published by Elsevier BV. All rights reserved.

引用

页码：1844 / 1848