Improving fatigue life of 7N01 Al alloy weld by surface spinning strengthening

doi:10.1111/ffe.13514

CORC > 金属研究所 > 中国科学院金属研究所

	Improving fatigue life of 7N01 Al alloy weld by surface spinning strengthening
	Wang, Dongqiqiong 1,3,4; Wang, Suhuan 2; Wang, Qiang 4; Hou, Jiapeng 4; Li, Xiaowu 1,3; Zhang, Zhefeng 4
刊名	FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
	2021-05-21
页码	13
关键词	Al alloy fatigue fatigue life surface strengthening welded joint
ISSN号	8756-758X
DOI	10.1111/ffe.13514
通讯作者	Wang, Qiang(gmwang@imr.ac.cn) ; Li, Xiaowu(xwli@mail.neu.edu.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
英文摘要	The 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.
资助项目	LiaoNing Revitalization Talents Program[XLYC1808027] ; National Natural Science Foundation of China[51871048]
WOS研究方向	Engineering ; Materials Science
语种	英语
出版者	WILEY
WOS记录号	WOS:000652755500001
资助机构	LiaoNing Revitalization Talents Program ; National Natural Science Foundation of China
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/161086]
专题	金属研究所_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, Minist Educ, Key Lab Anisotropy & Texture Mat, Wenhua Rd, Shenyang 110819, Peoples R China 2.CRRC Sifang Co Ltd, Engn Dept, Qingdao, Peoples R China 3.Northeastern Univ, Sch Mat Sci & Engn, Dept Mat Phys & Chem, Wenhua Rd, Shenyang 110819, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shi Changxu Innovat Ctr Adv Mat, 72 Wenhua Rd, Shenyang 110016, Peoples R China
推荐引用方式 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.