Texture, misorientation and mechanical anisotropy in a deformed dual phase stainless steel weld joint

被引:155
作者
Badji, R. [1 ,2 ]
Chauveau, T. [2 ]
Bacroix, B. [2 ]
机构
[1] Welding & Control Res Ctr CSC, Cheraga, Algeria
[2] Univ Paris 13, CNRS, LSPM, F-93430 Villetaneuse, France
来源
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2013年 / 575卷
关键词
Duplex stainless steel; Deformation texture; Mechanical anisotropy; TIG welding; DEFORMATION-BEHAVIOR; GRAIN-ORIENTATION; RESIDUAL-STRESSES; DUPLEX; AUSTENITE; MICROSTRUCTURE; EVOLUTION; FERRITE; STRAIN;
D O I
10.1016/j.msea.2013.03.018
中图分类号
TB3 [工程材料学];
学科分类号
0805 ; 080502 ;
摘要
The deformation behavior of a duplex stainless steel weld joint is studied. A detailed texture analysis shows that the increase of the deformation percentage leads to a reinforcement of all possible {hkl}< 111 > and {hkl}< 100 > components in austenite, and of the {hkl}< 110 > components in ferrite for both the base metal (BM) and the heat affected zone (HAZ). In the weld metal (WM), a strong scatter of the crystallographic orientation relationship (OR) initially found in the solidification microstructure is recorded after deformation. The analysis of the Kernel Average Misorientation (KAM) distribution shows that the deformation is more concentrated in the base metal than in the other parts of the weld joint. The final mechanical behavior studied through microhardness measurement and micromechanical calculations, allows us to separate the contribution of both microstructural and textural evolution to the overall strain hardening of the weld joint. (C) 2013 Elsevier B.V. All rights reserved.
引用
收藏
页码:94 / 103
页数:10
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