Microbanding mechanism in an Fe-Mn-C high-Mn twinning-induced plasticity steel

被引：76
|
作者：
Gutierrez-Urrutia, I. [1 ]
Raabe, D. [1 ]
机构：
[1] Max Planck Inst Eisenforsch GmbH, D-40237 Dusseldorf, Germany
来源：
SCRIPTA MATERIALIA | 2013年 / 69卷 / 01期
关键词：
Dislocation cell; Plastic deformation; Electron backscattering diffraction (EBSD); Electron channeling contrast imaging (ECCI); Austenitic steels; INTERSTITIAL-FREE STEEL; DISLOCATION-STRUCTURES; AUSTENITIC STEELS; LARGE STRAINS; DEFORMATION; EVOLUTION; MICROSTRUCTURE; TEMPERATURE; SUBSTRUCTURE; STRENGTH;
D O I：
10.1016/j.scriptamat.2013.03.010
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
We study the microbanding mechanism in an Fe-22Mn-0.6C (wt.%) twinning-induced plasticity steel. Dislocation substructures were examined by electron channeling contrast imaging and electron backscatter diffraction. We observe a pronounced effect of the strain path on microbanding, which is explained in terms of Schmid's law. Microbands created under shear loading have a non-crystallographic character. This is attributed to the microbanding mechanism and its relation with the dislocation substructure. Further insights into the dislocation configuration of microbands are provided. (c) 2013 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：53 / 56
页数：4
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