Microstructure evolution during friction-stir welding of AZ31 magnesium alloy

被引：175
作者：
Mironov, S. [1 ]
Onuma, T. [1 ]
Sato, Y. S. [1 ]
Kokawa, H. [1 ]
机构：
[1] Tohoku Univ, Grad Sch Engn, Dept Mat Proc, Sendai, Miyagi 9808579, Japan
来源：
ACTA MATERIALIA | 2015年 / 100卷
关键词：
Magnesium; Friction-stir welding; Electron-backscatter diffraction (EBSD); Microstructure; Texture; GRAIN-STRUCTURE; INHOMOGENEOUS DEFORMATION; MG ALLOY; TEXTURE; SIZE; BEHAVIOR; FRACTURE; STRESS;
D O I：
10.1016/j.actamat.2015.08.066
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The microstructure evolution of a typical hexagonal close-packed (HCP) material (AZ31 magnesium alloy) during friction stir welding was studied in a wide range of welding temperatures. In all cases, the grain structure development was found to be significantly influenced by the formation of a very strong {0 0 0 1} < u w t v > B-fiber texture. Due to limitations imposed by this texture as well as by symmetry of the HCP crystal structure, an extensive lowering of grain-boundary misorientation was found to occur during deformation. (C) 2015 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：301 / 312
页数：12
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