Role of initial {10-12} twin in the fatigue behavior of rolled Mg-3Al-1Zn alloy

被引：64

作者：

Park, Sung Hyuk ^{[2
]}

Hong, Seong-Gu ^{[1
]}

Lee, Chong Soo ^{[2
]}

机构：

[1] Korea Res Inst Stand & Sci, Div Ind Metrol, Taejon 305340, South Korea

[2] Pohang Univ Sci & Technol, Dept Mat Sci & Engn, Pohang 790784, South Korea

来源：

SCRIPTA MATERIALIA | 2010年 / 62卷 / 09期

关键词：

Magnesium alloy; Low-cycle fatigue; {10-12} twinning-detwinning; Initial {10-12} twin; Mean stress; WROUGHT MAGNESIUM ALLOY; DEFORMATION; ZK60A;

D O I：

10.1016/j.scriptamat.2010.01.021

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Initial {1 0 -1 2} twin influenced the plastic deformation mechanism activated during fatigue deformation, especially during compressive loading, by enhancing the activity of the detwinning mechanism. With the aid of initial {1 0 -1 2} twin, compressive deformation could be fully accommodated by detwinning alone. This change in the predominant plastic deformation mechanism during compressive loading significantly decreased compressive flow stress, causing an increase in mean stress, and thus deteriorated the fatigue resistance of the material. (C) 2010 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：666 / 669

页数：4

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