Direct observation of the twinning mechanism in an austenitic Fe-Mn-C steel

被引：71
|
作者：
Bracke, L. [1 ]
Kestens, L. [1 ,2 ]
Penning, J. [1 ]
机构：
[1] Univ Ghent, Fac Engn, Dept Mat Sci & Engn, B-9052 Ghent, Belgium
[2] Delft Univ Technol, Dept Met & Mat Engn, NL-2628 CD Delft, Netherlands
来源：
SCRIPTA MATERIALIA | 2009年 / 61卷 / 02期
关键词：
Twinning; Schmid's law; Transmission electron microscopy; SINGLE-CRYSTALS; DEFORMATION; METALS; SLIP;
D O I：
10.1016/j.scriptamat.2009.03.045
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The mechanism operating during mechanical twinning has been studied in a low stacking fault energy austenitic steel. The validity of Schmid's law for twinning is directly verified using transmission electron microscopy. Based on this, the critical resolved shear stress could be determined, both for slip of twinning dislocations and undissociated dislocations. The observations made are in agreement with the twinning model proposed by Mahajan and Chin. (C) 2009 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：220 / 222
页数：3
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