A nanotwinned austenite stainless steel with high hydrogen embrittlement resistance

doi:10.1016/j.jallcom.2019.02.312

IMR OpenIR

	A nanotwinned austenite stainless steel with high hydrogen embrittlement resistance
	Fan, Y. H.2; Cui, F.1,2; Lu, L.1; Zhang, B.1
通讯作者	Zhang, B.(bxz011@imr.ac.cn)
	2019-06-05
发表期刊	JOURNAL OF ALLOYS AND COMPOUNDS
ISSN	0925-8388
卷号	788 页码:1066-1075
摘要	A nanotwinned 304 steel with a favorable combination of strength and ductility has been made in this work through the dynamic plastic deformation (DPD) treatment followed by a proper heat treatment. The DPD, DPD-annealed and coarse grain (CG) 304 samples were tensile tested with slow strain rate under electrochemical hydrogen charging condition. Compared with CG sample, DPD-annealed sample with a mixed structure of nanotwins (41% volume fraction), recrystallization grain (RXG, 32% volume fraction) and dislocation structures (27% volume fraction) possesses a high HE resistance. Hydrogen causes a 12.5% reduction in yield strength and 5.4% reduction in tensile strength of DPD-annealed sample because hydrogen enhances dislocations/twin boundaries (TBs) interactions and the subsequent dislocation mobility during the TB-mediated slip transfer. Hydrogen charging also causes a 41% reduction in strain induced martensite of DPD-annealed sample. Strain localization is supposed to be mitigated by the bundle form of TBs and the micro-sized RXGs, accounting for the high HE resistance of DPD-annealed alloy. Our findings suggest a new strategy to design high strength alloys with low HE susceptibility. (C) 2019 Elsevier B.V. All rights reserved.
关键词	Austenite Stainless steel Nanotwin Hydrogen embrittlement TEM
资助者	National Natural Science Foundation of China
DOI	10.1016/j.jallcom.2019.02.312
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[U1608257]
WOS研究方向	Chemistry ; Materials Science ; Metallurgy & Metallurgical Engineering
WOS类目	Chemistry, Physical ; Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000462767000125
出版者	ELSEVIER SCIENCE SA
引用统计	被引频次：34[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/132648
专题	中国科学院金属研究所
通讯作者	Zhang, B.
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, 72 Wenhua Rd, Shenyang 110016, Liaoning, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Fan, Y. H.,Cui, F.,Lu, L.,et al. A nanotwinned austenite stainless steel with high hydrogen embrittlement resistance[J]. JOURNAL OF ALLOYS AND COMPOUNDS,2019,788:1066-1075.
APA	Fan, Y. H.,Cui, F.,Lu, L.,&Zhang, B..(2019).A nanotwinned austenite stainless steel with high hydrogen embrittlement resistance.JOURNAL OF ALLOYS AND COMPOUNDS,788,1066-1075.
MLA	Fan, Y. H.,et al."A nanotwinned austenite stainless steel with high hydrogen embrittlement resistance".JOURNAL OF ALLOYS AND COMPOUNDS 788(2019):1066-1075.