Effect of plastic strain damage on the hydrogen embrittlement of a dual-phase (DP) and a quenching and partitioning (Q&P) advanced high-strength steel

被引：32
|
作者：
Li, Huixing [1 ]
Venezuela, Jeffrey [1 ]
Zhou, Qingjun [2 ]
Shi, Zhiming [1 ]
Yan, Ming [3 ]
Knibbe, Ruth [1 ]
Zhang, Mingxing [1 ]
Dong, Futao [1 ,4 ]
Atrens, Andrej [1 ]
机构：
[1] Univ Queensland, Sch Mech & Min Engn, Ctr Adv Mat Proc & Mfg AMPAM, St Lucia, Qld 4072, Australia
[2] Baoshan Iron & Steel Co Ltd, Res Inst, Shanghai 201900, Peoples R China
[3] Southern Univ Sci & Technol, Dept Mat, Shenzhen 518055, Peoples R China
[4] North China Univ Sci & Technol, Qinhuangdao, Hebei, Peoples R China
来源：
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING | 2020年 / 785卷
关键词：
fracture behaviour; Stress/strain measurements; Other; Hydrogen embrittlement; iron alloys; plasticity; VACANCY FORMATION ENERGIES; REDUCING GRAIN-BOUNDARY; RESISTANCE EVALUATION; MECHANICAL-PROPERTIES; RETAINED AUSTENITE; SOLUTE SEGREGATION; DUCTILE FRACTURE; DISLOCATION LINE; INDUCED CRACKING; MICROSTRUCTURE;
D O I：
10.1016/j.msea.2020.139343
中图分类号：
TB3 [工程材料学];
学科分类号：
0805 ; 080502 ;
摘要：
The hydrogen influence on two 1180 MPa advanced high-strength steels was studied using electropolished U-bend specimens in HCl solutions of pH 1 and pH 3. Bending limit diagrams identified conditions for safe use. Hydrogen-assisted fracture occurred only near the bending limit, and was promoted by microvoids and microfractures, introduced by the severe plastic deformation of the U-bend specimens. The hydrogen fracture initiation and early propagation was by the mechanisms designated as hydrogen fracture due to hydrogen enhanced microvoid coalescence (HFMVC). Exploratory work indicated that fractures were critically dependent on the surface state of the specimens.
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页数：20
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