Insight to the Influence of Ti Addition on the Strain-Induced Martensitic Transformation in a High (about 7 wt.%) Mn Stainless Steel

被引：1
作者：
Sadeghpour, Saeed [1 ]
Javaheri, Vahid [1 ]
Kermanpur, Ahmad [2 ]
Komi, Jukka [1 ]
机构：
[1] Univ Oulu, Ctr Adv Steels Res, Oulu 90014, Finland
[2] Isfahan Univ Technol, Dept Mat Engn, Esfahan 8415683111, Iran
来源：
METALS | 2020年 / 10卷 / 05期
基金：
芬兰科学院;
关键词：
metastable austenite; Ti-bearing stainless steel; strain-induced martensitic transformation; DEFORMATION-INDUCED TRANSFORMATION; MECHANICAL-PROPERTIES; PLASTIC-DEFORMATION; MICROSTRUCTURE; STATE; TEMPERATURE; REVERSION; DUCTILITY; KINETICS;
D O I：
10.3390/met10050568
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The kinetics of strain-induced martensite (SIM) formation in a Ti-bearing 201L stainless steel were evaluated and compared to the existing results of two conventional stainless steel grades; i.e., 201L and 304L AISI. The effects of strain rate and rolling pass reduction on the kinetics of SIM formation during cold rolling were investigated. The Ti-microalloying was found to be intensifying the transformation due to lowering the stacking fault energy. It was seen that decreasing the rolling pass reduction strongly affected the variation of SIM volume fraction. Furthermore, a close correlation between the hardness and strain-induced transformation was found arising from microstructural evolution during the cold rolling process. Three stages in the hardening behavior were detected associated with lath-type martensite formation, transition stage of martensite laths break up and formation of dislocation-cell-type martensite.
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页数：13
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