Supper strong nanostructured TWIP steels for automotive applications

被引：0
|
作者：
Guowei Yuan [1 ,2 ]
Mingxin Huang [1 ,2 ]
机构：
[1] Shenzhen Institute of Research and Innovation,The University of Hong Kong
[2] Department of Mechanical Engineering,The University of Hong Kong
来源：
ProgressinNaturalScience:MaterialsInternational | 2014年 / 24卷 / 01期
关键词：
Nanostructure; TWIP steel; GND; Recovery;
D O I：
暂无
中图分类号：
U465.11 [];
学科分类号：
0805 ;
摘要：
A ductile and super strong nanostructured twinning-induced plasticity(TWIP) steels were fabricated by cold rolling and recovery treatment.This strong and ductile nanostructured alloy can be used for the anti-intrusion part of body-in-white. Cold rolling was used to produce intensive nano-twins so that the microstructure was greatly refined. Recovery is employed to anneal dislocations for improving the ductility. A physical model is proposed to describe the relationship between the yield stress and the twin density. Furthermore,the present work also found that the activation energy for recovery is 160 J/mol,which implies that the recovery mechanism is governed by dislocation core diffusion.
引用
收藏
页码：50 / 55
页数：6
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