Effects of hysteresis energy and mean stress on low-cycle fatigue behaviors of an extruded magnesium alloy

被引：39

作者：

Lv, F. ^{[1
]}

Yang, F. ^{[1
]}

Li, S. X. ^{[1
]}

Zhang, Z. F. ^{[1
]}

机构：

[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China

来源：

SCRIPTA MATERIALIA | 2011年 / 65卷 / 01期

基金：

中国国家自然科学基金;

关键词：

AZ31 magnesium alloy; Low-cycle fatigue; Mean stress; Hysterisis energy; Fatigue life; DEFORMATION-BEHAVIOR;

D O I：

10.1016/j.scriptamat.2011.03.006

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Extruded Mg-3% Al-1% Zn alloy (AZ31) plate often exhibits quite different strength and plasticity along two directions (extruded direction, ED; transverse direction, TD) under tension and compression conditions. In particular, the hysteresis loops of ED and TD samples display obviously different shapes in the total strain amplitude range from 0.1% to 1%. Accordingly, the low-cycle fatigue lives of TD samples are found to be longer than those of ED samples, which can be attributed to the difference in the mean stress and hysteresis energy. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：53 / 56

页数：4

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