Effects of Prestrain and Baking on the Tensile and Fatigue Properties of Fe-0.1C-5Mn Transformation-Induced Plasticity Steel

被引：0
作者：
Zhang, Mei [1 ]
Zhang, Bendao [1 ]
Chen, Yangfei [1 ]
Xu, Qing [1 ]
Tian, Yibo [1 ]
Yan, Zijie [1 ]
Liu, Jin [1 ]
Dong, Han [1 ]
机构：
[1] Shanghai Univ, Sch Mat Sci & Engn, Shanghai 200444, Peoples R China
来源：
ADVANCED ENGINEERING MATERIALS | 2023年 / 25卷 / 15期
基金：
国家重点研发计划;
关键词：
bake hardening; high-cycle fatigue; medium Mn TRIP steel; pre-straining; TRIP effect; HIGH-CYCLE FATIGUE; HARDENING BEHAVIOR; STRENGTH; AUSTENITE; LUDERS;
D O I：
10.1002/adem.202201929
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
This study aims to investigate the effects of uniaxial tensile prestrain (PS) and bake hardening (BH) on tensile and force-controlled (R = 0.1) high-cycle fatigue (HCF) properties of Fe-0.1C-5Mn medium Mn transformation-induced plasticity (TRIP) steel. Stress-life data of the as-received (AR: 0% prestrain) and 10%, 15%, and 20% prestrained (PS10, PS15, PS20) samples have been generated under both baked and unbaked conditions. It is manifested that prestraining increases the HCF life of the steel. The addition of BH further increases the HCF life. The fatigue limit is greatly improved from 433 MPa (AR) to 532 MPa (BH20), and the maximum incremental value is as great as 99 MPa. It is attributed to the austenite to martensite transformation (progressive TRIP effect) that occurs during the prestraining and cyclic loading processes.
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页数：10
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