Different strain rate sensitivities between Fe-22Mn-0.6C and Fe-30Mn-3Si-3Al twinning-induced plasticity steels

被引：39
|
作者：
Yang, H. K. [1 ,2 ]
Tian, Y. Z. [1 ]
Zhang, Z. J. [1 ]
Zhang, Z. F. [1 ]
机构：
[1] Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Peoples R China
[2] Univ Chinese Acad Sci, 19 Yuquan Rd, Beijing 100049, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2016年 / 655卷
基金：
中国国家自然科学基金;
关键词：
Twinning-induced plasticity (TWIP) steel; Strain rate sensitivity (SRS); Twin; Dynamic strain aging (DSA); Tensile strength; FE-MN-C; STACKING-FAULT ENERGY; TENSILE DEFORMATION-BEHAVIOR; MECHANICAL-PROPERTIES; EVOLUTION; TEMPERATURE; DEPENDENCE; STRESS;
D O I：
10.1016/j.msea.2016.01.003
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The strain rate sensitivity (SRS) of Fe-22Mn-0.6C and Fe-30Mn-3Si-3Al twinning-induced plasticity (TWIP) steel was studied in the strain rate range from 10(-4) to 10 degrees s(-1). The Fe-22Mn-0.6C steel exhibited negative SRS, while the Fe-30Mn-3Si-3Al steel showed positive SRS. Dynamic strain aging (DSA) was detected in Fe-22Mn-0.6C steel but not in Fe-30Mn-3Si-3Al steel. Accordingly, the two typical TWIP steels can be classified as DSA-facilitated and DSA-free TWIP steels. Meanwhile, the density of twin boundary obviously decreased in Fe-22Mn-0.6C steel but had little change in Fe-30Mn-3Si-3Al steel with increasing the strain rate. The different SRS phenomena were discussed based on the twinning mechanism and DSA effect. (C) 2016 Elsevier B.V. All rights reserved.
引用
收藏
页码：251 / 255
页数：5
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