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

doi:10.1007/s40195-020-01046-8

IMR OpenIR

	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
通讯作者	Wang, Zhen-Bo(zbwang@imr.ac.cn)
	2020-04-21
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	7
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.
关键词	Gradient nanostructured Surface mechanical rolling treatment Welded Fatigue
资助者	National Key Research and Development Program of China ; Liaoning Revitalization Talents Program ; Shenyang National Laboratory for Materials Science
DOI	10.1007/s40195-020-01046-8
收录类别	SCI
语种	英语
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
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:000528149400002
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计	被引频次：7[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/321006/138599
专题	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.