Study of deformation twinning and planar slip in a TWIP steel by Electron Channeling Contrast Imaging in a SEM

被引：21
|
作者：
Gutierrez-Urrutia, Ivan [1 ]
Raabe, Dierk [1 ]
机构：
[1] Max Planck Inst Eisenforsch GmbH, D-40237 Dusseldorf, Germany
来源：
TEXTURES OF MATERIALS, PTS 1 AND 2 | 2012年 / 702-703卷
关键词：
Electron Channeling Contrast Imaging; EBSD; dislocation substructure; twin substructure; TWIP steel; DENSE DISLOCATION WALLS; SINGLE-CRYSTALS; BULK MATERIALS; FLOW-STRESS; POLYCRYSTALS; MICROSCOPY;
D O I：
10.4028/www.scientific.net/MSF.702-703.523
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
We study the dislocation and twin substructures in a high manganese twinning-induced-plasticity steel (TWIP) by means of electron channeling contrast imaging. At low strain (true strain below 0.1) the dislocation substructure shows strong orientation dependence. It consists of dislocation cells and planar dislocation arrangements. This dislocation substructure is replaced by a complex dislocation/twin substructure at high strain (true strain of 0.3-0.4). The twin substructure also shows strong orientation dependence. We identify three types of dislocation/twin substructures. Two of these substructures, those which are highly favorable or unfavorable oriented for twinning, exhibit a Schmid behavior. The other twin substructure does not fulfill Schmid's law.
引用
收藏
页码：523 / 529
页数：7
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