Atom probe tomographic observation of hydrogen trapping at carbides/ferrite interfaces for a high strength steel

doi:10.1016/j.jmst.2017.11.008

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	Atom probe tomographic observation of hydrogen trapping at carbides/ferrite interfaces for a high strength steel
	Jiang, YF ; Zhang, B ; Zhou, Y ; Wang, JQ ; Han, EH ; Ke, W
刊名	JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
	2018-08-01
卷号	34 期号:8 页码:1344-1348
关键词	Low alloy steel TEM Interfaces Hydrogen embrittlement
ISSN号	1005-0302
DOI	10.1016/j.jmst.2017.11.008
英文摘要	A three-dimensional atom probe (3DAP) technique has been used to characterize the hydrogen distribution on carbides for a high strength AISI 4140 steel. Direct evidence of H atoms trapped at the carbide/ferrite interfaces has been revealed by 3DAP mapping. Hydrogen is mainly trapped on carbide/ferrite interfaces along the grain boundaries. Slow strain rate tensile (SSRT) testing shows that the AISI 4140 steel is highly sensitive to hydrogen embrittlement. The corresponding fractographic morphologies of hydrogen charged specimen exhibit brittle fracture feature. Combined with these results, it is proposed that the hydrogen trapping sites present in the grain boundaries are responsible for the hydrogen-induced intergranular fracture of AISI 4140. The direct observation of hydrogen distribution contributes to a better understanding of the mechanism of hydrogen embrittlement. (C) 2017 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
学科主题	Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering
语种	英语
WOS记录号	WOS:000437810000009
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/80067]
专题	金属研究所_中国科学院金属研究所
作者单位	1.[Jiang, Y. F. 2.Zhang, B. 3.Zhou, Y. 4.Wang, J. Q. 5.Han, E. -H. 6.Ke, W.] Chinese Acad Sci, Inst Met Res, CAS Key Lab Nucl Mat & Safety Assessment, Shenyang 110016, Peoples R China 7.[Jiang, Y. F.] Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Jiang, YF,Zhang, B,Zhou, Y,et al. Atom probe tomographic observation of hydrogen trapping at carbides/ferrite interfaces for a high strength steel[J]. JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,2018,34(8):1344-1348.
APA	Jiang, YF,Zhang, B,Zhou, Y,Wang, JQ,Han, EH,&Ke, W.(2018).Atom probe tomographic observation of hydrogen trapping at carbides/ferrite interfaces for a high strength steel.JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY,34(8),1344-1348.
MLA	Jiang, YF,et al."Atom probe tomographic observation of hydrogen trapping at carbides/ferrite interfaces for a high strength steel".JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY 34.8(2018):1344-1348.