Enhanced Fatigue Property of Welded S355J2W Steel by Forming a Gradient Nanostructured Surface Layer

doi:10.1007/s40195-020-01046-8

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	Enhanced Fatigue Property of Welded S355J2W Steel by Forming a Gradient Nanostructured Surface Layer
	An, Lu; Sun, Yan-Tao; Lu, Shan-Ping; Wang, Zhen-Bo
刊名	ACTA METALLURGICA SINICA-ENGLISH LETTERS
	2020-04-21
页码	7
关键词	Gradient nanostructured Surface mechanical rolling treatment Welded Fatigue
ISSN号	1006-7191
DOI	10.1007/s40195-020-01046-8
通讯作者	Wang, Zhen-Bo(zbwang@imr.ac.cn)
英文摘要	Welded joints are usually characterized by microstructural and compositional inhomogeneities, which may significantly degrade their fatigue properties and result in unpredictable failures. The present work demonstrates a novel and simple method to effectively optimize the microstructure in the surface layer and promote the fatigue properties of welded specimens. By a recently developed approach-surface mechanical rolling treatment (SMRT), a gradient nanostructured surface layer is formed on welded S355J2W steel specimens. The mean grain size is refined to nanometer scale, and the hardness is significantly enhanced in the SMRT surface layer. Independent of the initially inhomogeneous microstructure and hardness distributions, the microstructure and hardness distributions in the surface layers are comparable on different zones of a welded specimen after SMRT with the same procedure. Consequently, fatigue property of the SMRT specimens is significantly enhanced relative to that of the as-welded specimens within the high cycle fatigue regime.
资助项目	National Key Research and Development Program of China[2017YFA0204401] ; National Key Research and Development Program of China[2017YFA0204403] ; Liaoning Revitalization Talents Program[XLYC1808008] ; Shenyang National Laboratory for Materials Science
WOS研究方向	Metallurgy & Metallurgical Engineering
语种	英语
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
WOS记录号	WOS:000528149400002
资助机构	National Key Research and Development Program of China ; Liaoning Revitalization Talents Program ; Shenyang National Laboratory for Materials Science
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/138598]
专题	金属研究所_中国科学院金属研究所
通讯作者	Wang, Zhen-Bo
作者单位	Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	An, Lu,Sun, Yan-Tao,Lu, Shan-Ping,et al. Enhanced Fatigue Property of Welded S355J2W Steel by Forming a Gradient Nanostructured Surface Layer[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2020:7.
APA	An, Lu,Sun, Yan-Tao,Lu, Shan-Ping,&Wang, Zhen-Bo.(2020).Enhanced Fatigue Property of Welded S355J2W Steel by Forming a Gradient Nanostructured Surface Layer.ACTA METALLURGICA SINICA-ENGLISH LETTERS,7.
MLA	An, Lu,et al."Enhanced Fatigue Property of Welded S355J2W Steel by Forming a Gradient Nanostructured Surface Layer".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2020):7.