Annealing strengthening in a dilute Mg-Zn-Ca sheet alloy

被引：62
|
作者：
Zeng, Z. R. [1 ]
Zhu, Y. M. [1 ]
Bian, M. Z. [1 ]
Xu, S. W. [2 ]
Davies, C. H. J. [3 ]
Birbilis, N. [1 ]
Nie, J. F. [1 ]
机构：
[1] Monash Univ, Dept Mat Sci & Engn, Clayton, Vic 3800, Australia
[2] Baosteel Grp Corp, Res Inst, R&D Ctr, Shanghai, Peoples R China
[3] Monash Univ, Dept Mech & Aerosp Engn, Clayton, Vic 3800, Australia
来源：
SCRIPTA MATERIALIA | 2015年 / 107卷
基金：
澳大利亚研究理事会;
关键词：
Mg alloys; Annealing strengthening; GP zone; Dislocation pinning; STRETCH FORMABILITY; ROOM-TEMPERATURE; TEXTURE; MECHANISMS; TENSILE;
D O I：
10.1016/j.scriptamat.2015.06.002
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
Magnesium sheet alloy of dilute composition, Mg-0.3Zn-0.1Ca (at.%), does not exhibit any hardening response during heating. However, an annealing treatment at 80-200 degrees C, after some plastic strain in tension, leads to a remarkable strengthening, rather than softening, effect. By using electron backscattered diffraction and scanning transmission electron microscopy, it is found that the strengthening effect is caused by the pinning of gliding basal dislocations by GP zones and possibly solute atoms segregated to the dislocations. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：127 / 130
页数：4
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