Microstructure and mechanical properties of multi-directionally forged Mg-Al-Zn alloy

被引：97

作者：

Miura, H. ^{[1
]}

Maruoka, T. ^{[1
]}

Yang, X. ^{[2
]}

Jonas, J. J. ^{[3
]}

机构：

[1] Univ Electrocommun, UEC Tokyo, Dept Mech Engn & Intelligent Syst, Chofu, Tokyo 1828585, Japan

[2] Cent S Univ, Sch Mat Sci & Engn, Changsha 410083, Hunan, Peoples R China

[3] McGill Univ, Dept Mat Engn, Montreal, PQ H3A 2B2, Canada

来源：

SCRIPTA MATERIALIA | 2012年 / 66卷 / 01期

关键词：

Magnesium alloys; Ultrafine-grained microstructure; Twinning; Multi-directional forging; Mechanical properties; DECREASING TEMPERATURE CONDITIONS; AZ31 MAGNESIUM ALLOY; DEFORMATION;

D O I：

10.1016/j.scriptamat.2011.10.005

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

A Mg-Al-Zn alloy was multi-directionally forged at room temperature to cumulative strains of Sigma Delta epsilon = 2.0. The coarse initial grains were gradually subdivided into ultrafine ones by mechanical twins. A small pass strain of Delta epsilon = 0.1 was employed and generations of twins effectively suppressed the development of sharp textures, enabling severe plastic deformation at ambient temperature. Tensile testing revealed an excellent balance of mechanical properties: 480 MPa yield stress, 525 MPa ultimate tensile strength and 5% plastic strain to fracture. (C) 2011 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

引用

页码：49 / 51

页数：3

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