An experimental and numerical study on strain controlled fatigue response of TRIP steel under influence of hydrogen

被引：2
|
作者：
Das, Bimal [1 ,2 ]
Singh, Akhilendra [1 ]
Ghosal, Puja [1 ]
Priya, Ashish [1 ]
Reddy, R. Rohith Kumar [1 ]
机构：
[1] Indian Inst Technol Patna, Dept Mech Engn, Bihta 801106, India
[2] IIT Patna, Dept Mech Engn, Bihta 801106, Bihar, India
来源：
INTERNATIONAL JOURNAL OF FATIGUE | 2023年 / 172卷
关键词：
Low cycle fatigue; Cyclic softening; Cyclic hardening; Ohno-Wang kinematic hardening; Low angle grain boundaries; MARTENSITE-TRANSFORMATION; INDUCED CRACKING; EMBRITTLEMENT; BEHAVIOR; MODELS;
D O I：
10.1016/j.ijfatigue.2023.107635
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The present work aims to study the influence of hydrogen charging on the transformation induced plasticity steel under strain-controlled low cycle fatigue (LCF). Hydrogen charging had detrimental effect on strain-controlled LCF lives. Cyclic hardening in un-charged specimen due to strain-induced martensitic transformation (SIMT) dominated over cyclic softening. In contrast, generation of large fraction of low angle grain boundaries in hydrogen charged specimen leads to cyclic softening and supresses cyclic hardening due to SIMT. Additionally, Cyclic plasticity modelling using Ohno-Wang kinematic hardening model is validated by simulating cyclic stress-strain hysteresis loop and cyclic softening curve of uncharged and hydrogen charged specimens.
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页数：12
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