Hydrogen-assisted fracture features of a high strength ferrite-pearlite steel

doi:10.1016/j.jmst.2018.12.019

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	Hydrogen-assisted fracture features of a high strength ferrite-pearlite steel
	Jiang, Yuefeng 1,3; Zhang, Bo 1; Wang, Dongying 2; Zhou, Yu 1; Wang, Jianqiu 1; Han, En-Hou 1; Ke, Wei 1
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2019-06-01
卷号	35 期号:6 页码:1081-1087
关键词	Ferrite-pearlite steel TEM Fracture Hydrogen embrittlement
ISSN号	1005-0302
DOI	10.1016/j.jmst.2018.12.019
通讯作者	Zhang, Bo(bxz011@imr.ac.cn)
英文摘要	Up to now, the exact reason of hydrogen-induced fracture for ferrite-pearlite (FP) steel is still not fully understood. This study presents detail observations of the feature beneath the fracture surface with the aim to reveal the hydrogen-induced cracking initiation and propagation processes. Slow strain rate tensile (SSRT) testing shows that the FP steel is sensitive to hydrogen embrittlement (HE). Focused ion beam (FIB) was used to prepare samples for TEM observations after HE fracture. The corresponding fractographic morphologies of hydrogen charged specimen exhibit intergranular (IG) and quasi-cleavage (QC) fracture feature. Pearlite colony, ferrite/pearlite (F/P) boundary and the adjacent ferrite matrix are found to be responsible for the initial HE fracture and the subsequent propagation. With increasing of the stress intensity factor, fracture mode is found to change from mixed IG and QC to entire QC feature which only occurs at the ferrite matrix. No crack is observed at the ferrite/cementite (F/C) interface. This may be mainly due to the limited pearlite lamella size and relatively low interface energy. (C) 2019 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
资助项目	Joint Funds of the National Natural Science Foundation of China[U1608257]
WOS研究方向	Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	JOURNAL MATER SCI TECHNOL
WOS记录号	WOS:000464017000016
资助机构	Joint Funds of the National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/132847]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, Bo
作者单位	1.Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Liaoning, Peoples R China 2.Shenyang Blower Works Grp Corp, Shenyang 110869, Liaoning, Peoples R China 3.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Liaoning, Peoples R China
推荐引用方式 GB/T 7714	Jiang, Yuefeng,Zhang, Bo,Wang, Dongying,et al. Hydrogen-assisted fracture features of a high strength ferrite-pearlite steel[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2019,35(6):1081-1087.
APA	Jiang, Yuefeng.,Zhang, Bo.,Wang, Dongying.,Zhou, Yu.,Wang, Jianqiu.,...&Ke, Wei.(2019).Hydrogen-assisted fracture features of a high strength ferrite-pearlite steel.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,35(6),1081-1087.
MLA	Jiang, Yuefeng,et al."Hydrogen-assisted fracture features of a high strength ferrite-pearlite steel".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 35.6(2019):1081-1087.