Evaluation of the influence of hydrogen on some commercial DP, Q&P and TWIP advanced high-strength steels during automobile service

被引：29
|
作者：
Liu, Qinglong [1 ]
Zhou, Qingjun [2 ]
Venezuela, Jeffrey [1 ]
Zhang, Mingxing [1 ]
Atrens, Andrej [1 ]
机构：
[1] Univ Queensland, Sch Mech & Min Engn, Div Mat, St Lucia, Qld 4072, Australia
[2] Baoshan Iron & Steel Co Ltd, Res Inst, Shanghai 201900, Peoples R China
来源：
ENGINEERING FAILURE ANALYSIS | 2018年 / 94卷
关键词：
Advanced high-strength steel; Hydrogen embrittlement; Fractography; HE mechanism; STRESS-CORROSION CRACKING; EMBRITTLEMENT SUSCEPTIBILITY; MECHANICAL-PROPERTIES; AUTOMOTIVE INDUSTRY; FRACTURE PROPERTIES; RETAINED AUSTENITE; 3.5NICRMOV STEELS; SCC; TRANSPORT; FAILURE;
D O I：
10.1016/j.engfailanal.2018.08.011
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
The hydrogen influence was evaluated (A) for laboratory conditions with hydrogen concentrations larger than in service, and (B) at substantial loading rates to simulate a crash. Hydrogen in the studied laboratory conditions caused minimal influence for 980DP and 1200DP, and some influence for 980DP-650YS, 980DP-700YS, 980QP and 950TW. Simulated crash situations caused some influence for 980DP, 980QP and 950TW; their properties quickly reverted after the end of hydrogen charging. Two new mechanisms are proposed: (i) hydrogen enhanced macroscopic plasticity (HEMP) decreasing the yield stress, and (ii) hydrogen assisted micro-fracture (HAM) decreasing ductility at fracture at the ultimate tensile strength.
引用
收藏
页码：249 / 273
页数：25
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