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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
Corresponding AuthorWang, Zhen-Bo(zbwang@imr.ac.cn)
2020-04-21
Source PublicationACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN1006-7191
Volume33Issue:9Pages:7
AbstractWelded 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.
KeywordGradient nanostructured Surface mechanical rolling treatment Welded Fatigue
Funding OrganizationNational Key Research and Development Program of China ; Liaoning Revitalization Talents Program ; Shenyang National Laboratory for Materials Science
DOI10.1007/s40195-020-01046-8
Indexed BySCI
Language英语
Funding ProjectNational 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 Research AreaMetallurgy & Metallurgical Engineering
WOS SubjectMetallurgy & Metallurgical Engineering
WOS IDWOS:000528149400002
PublisherCHINESE ACAD SCIENCES, INST METAL RESEARCH
Citation statistics
Cited Times:1[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/138596
Collection中国科学院金属研究所
Corresponding AuthorWang, Zhen-Bo
AffiliationChinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
Recommended Citation
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,2020,33(9):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,33(9),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 33.9(2020):7.
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