IMR OpenIR
Improving fatigue life of 7N01 Al alloy weld by surface spinning strengthening
Wang, Dongqiqiong1,2,3; Wang, Suhuan4; Wang, Qiang3; Hou, Jiapeng3; Li, Xiaowu1,2; Zhang, Zhefeng3
Corresponding AuthorWang, Qiang(gmwang@imr.ac.cn) ; Li, Xiaowu(xwli@mail.neu.edu.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
2021-05-21
Source PublicationFATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
ISSN8756-758X
Pages13
AbstractThe purpose of this study is to improve the surface microstructure and mechanical properties of 7N01 Al alloy welded joints by surface spinning strengthening (3S), so as to improve the fatigue life at certain stress. Results show that after the 3S treatment, the microhardness of the welded joint increases significantly due to the introduction of some nanoprecipitates and dislocations, and the strength and elongation increase simultaneously. The minimum fatigue life of the welded specimen under the condition of maximum stress of 150 MPa and stress ratio of 0.1 is increased from less than 10(6) cycles to more than 3 x 10(6) cycles after the 3S treatment. Fracture surface analysis shows that the crack initiation site of the sample with welded joint is turned from the surface to the subsurface after 3S treatment, which is beneficial to the elimination of surface defect and the improvement of surface strength.
KeywordAl alloy fatigue fatigue life surface strengthening welded joint
Funding OrganizationLiaoNing Revitalization Talents Program ; National Natural Science Foundation of China
DOI10.1111/ffe.13514
Indexed BySCI
Language英语
Funding ProjectLiaoNing Revitalization Talents Program[XLYC1808027] ; National Natural Science Foundation of China[51871048]
WOS Research AreaEngineering ; Materials Science
WOS SubjectEngineering, Mechanical ; Materials Science, Multidisciplinary
WOS IDWOS:000652755500001
PublisherWILEY
Citation statistics
Document Type期刊论文
Identifierhttp://ir.imr.ac.cn/handle/321006/161087
Collection中国科学院金属研究所
Corresponding AuthorWang, Qiang; Li, Xiaowu; Zhang, Zhefeng
Affiliation1.Northeastern Univ, Sch Mat Sci & Engn, Dept Mat Phys & Chem, Wenhua Rd, Shenyang 110819, Peoples R China
2.Northeastern Univ, Minist Educ, Key Lab Anisotropy & Texture Mat, Wenhua Rd, Shenyang 110819, Peoples R China
3.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China
4.CRRC Sifang Co Ltd, Engn Dept, Qingdao, Peoples R China
Recommended Citation
GB/T 7714
Wang, Dongqiqiong,Wang, Suhuan,Wang, Qiang,et al. Improving fatigue life of 7N01 Al alloy weld by surface spinning strengthening[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2021:13.
APA Wang, Dongqiqiong,Wang, Suhuan,Wang, Qiang,Hou, Jiapeng,Li, Xiaowu,&Zhang, Zhefeng.(2021).Improving fatigue life of 7N01 Al alloy weld by surface spinning strengthening.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,13.
MLA Wang, Dongqiqiong,et al."Improving fatigue life of 7N01 Al alloy weld by surface spinning strengthening".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2021):13.
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