Improving Fatigue Properties of 316L Stainless Steel Welded Joints by Surface Spinning Strengthening

doi:10.1007/s40195-024-01668-2

IMR OpenIR

	Improving Fatigue Properties of 316L Stainless Steel Welded Joints by Surface Spinning Strengthening
	Wang, Dongqiqiong 1,2,3; Wang, Qiang 4; Li, Xiaowu 1,2; Zhang, Zhefeng 1,2,3
通讯作者	Wang, Qiang(wangqiang@lnu.edu.cn) ; Li, Xiaowu(xwli@mail.neu.edu.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
	2024-02-29
发表期刊	ACTA METALLURGICA SINICA-ENGLISH LETTERS
ISSN	1006-7191
页码	15
摘要	The surface spinning strengthening (3S) mechanism and fatigue life extension mechanism of 316L stainless steel welded joint were systematically elucidated by microstructural analyses and mechanical tests. Results indicate that surface gradient hardening layer of approximately 1 mm is formed in the base material through grain fragmentation and deformation twin strengthening, as well as in the welding zone composed of deformed delta-phases and nanotwins. The fatigue strength of welded joint after 3S significantly rises by 32% (from 190 to 250 MPa), which is attributed to the effective elimination of surface geometric defects, discrete refinement of delta-Fe phases and the appropriate improvement in the surface strength, collectively mitigating strain localization and surface fatigue damage within the gradient strengthening layer. The redistributed fine delta-Fe phases benefited by strong stress transfer of 3S reduce the risk of surface weak phase cracking, causing the fatigue fracture to transition from microstructure defects to crystal defects dominated by slip, further suppressing the initiation and early propagation of fatigue cracks.
关键词	316L stainless steel Welded joint Surface spinning strengthening Nanotwin Fatigue life
资助者	Science and Technology Cooperation Project between Jilin Province and Chinese Academy of Sciences ; Fundamental Research Funds for the Central Universities ; National Natural Science Foundation of China (NSFC) ; Liaoning Revitalization Talents Program
DOI	10.1007/s40195-024-01668-2
收录类别	SCI
语种	英语
资助项目	Science and Technology Cooperation Project between Jilin Province and Chinese Academy of Sciences[2020SYHZ0017] ; Fundamental Research Funds for the Central Universities[N2202003] ; National Natural Science Foundation of China (NSFC)[52100003] ; National Natural Science Foundation of China (NSFC)[52171108] ; National Natural Science Foundation of China (NSFC)[52321001] ; Liaoning Revitalization Talents Program[XLYC1808027]
WOS研究方向	Metallurgy & Metallurgical Engineering
WOS类目	Metallurgy & Metallurgical Engineering
WOS记录号	WOS:001175724000002
出版者	CHINESE ACAD SCIENCES, INST METAL RESEARCH
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/185022
专题	中国科学院金属研究所
通讯作者	Wang, Qiang; Li, Xiaowu; Zhang, Zhefeng
作者单位	1.Northeastern Univ, Sch Mat Sci & Engn, Dept Mat Phys & Chem, Shenyang 110819, Peoples R China 2.Northeastern Univ, Key Lab Anisotropy & Texture Mat, Minist Educ, Shenyang 110819, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 4.Liaoning Univ, Coll Light Ind, Shenyang 110036, Peoples R China
推荐引用方式 GB/T 7714	Wang, Dongqiqiong,Wang, Qiang,Li, Xiaowu,et al. Improving Fatigue Properties of 316L Stainless Steel Welded Joints by Surface Spinning Strengthening[J]. ACTA METALLURGICA SINICA-ENGLISH LETTERS,2024:15.
APA	Wang, Dongqiqiong,Wang, Qiang,Li, Xiaowu,&Zhang, Zhefeng.(2024).Improving Fatigue Properties of 316L Stainless Steel Welded Joints by Surface Spinning Strengthening.ACTA METALLURGICA SINICA-ENGLISH LETTERS,15.
MLA	Wang, Dongqiqiong,et al."Improving Fatigue Properties of 316L Stainless Steel Welded Joints by Surface Spinning Strengthening".ACTA METALLURGICA SINICA-ENGLISH LETTERS (2024):15.