Hardening and softening in selected magnesium alloys

被引：31

作者：

Lukac, P. ^{[1
]}

Trojanova, Z. ^{[1
]}

机构：

[1] Charles Univ Prague, Fac Math & Phys, Dept Med Phys, Prague 12116 2, Czech Republic

来源：

MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2007年 / 462卷 / 1-2期

关键词：

magnesium alloys; compression test; work hardening; softening; dynamic strain ageing;

D O I：

10.1016/j.msea.2006.01.170

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

The paper deals with the influence of temperature and solute atoms on the stress relaxation behaviour. Examples will be given on the deformation behaviour of selected magnesium alloys ZE41 and QE22. The testing temperature and strain rate strongly influence the behaviour. The temperature and strain rate dependences of the yield stress are in some cases non-monotonic. Post-relaxation effect-an increase of the flow stress after stress relaxation is analysed in relation to the dynamic strain-ageing effect. The activation volume is calculated using the strain rate change experiments, and the non-conservative motion of jogs is estimated as a possible thermally activated process. (C) 2006 Elsevier B.V. All rights reserved.

引用

页码：23 / 28

页数：6

共 23 条

[1] Application of texture simulation to understanding mechanical behavior of Mg and solid solution alloys containing Li or Y [J].