Internal stresses and the mechanism of work hardening in twinning-induced plasticity steels

被引：43
|
作者：
Gil Sevillano, Javier [1 ]
de Las Cuevas, Fernando [1 ]
机构：
[1] Univ Navarra, TECNUN, CEIT, San Sebastian 20018, Spain
来源：
SCRIPTA MATERIALIA | 2012年 / 66卷 / 12期
关键词：
Austenitic steels; Twinning; Plastic deformation; Internal stresses; Bauschinger effect; TWIP STEEL;
D O I：
10.1016/j.scriptamat.2012.02.019
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
An analysis of the loading-unloading behaviour of tensile tests of a 22Mn-0.6C (wt.%) twinning-induced plasticity steel shows the development of a very high level of internal stresses concomitant with its peculiar, nearly constant strain-hardening rate. A composite-type strengthening contribution from the increasing volume fraction of twin lamellae offers an explanation for an enhanced internal stress development in this type of materials. Proof of the quantitative significance of the composite-type strengthening requires, however, further study. (C) 2012 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.
引用
收藏
页码：978 / 981
页数：4
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