Fatigue crack initiation site transition of high-strength steel under very high-cycle fatigue

doi:10.1111/ffe.14437

IMR OpenIR

	Fatigue crack initiation site transition of high-strength steel under very high-cycle fatigue
	Teng, Xiaoyuan 1,2; Pang, Jianchao 1; Gao, Chong 1; Li, Shouxin 1; Zhang, Zhefeng 1
通讯作者	Pang, Jianchao(jcpang@imr.ac.cn) ; Zhang, Zhefeng(zhfzhang@imr.ac.cn)
	2024-09-08
发表期刊	FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES
ISSN	8756-758X
页码	15
摘要	The very high-cycle fatigue (VHCF) fractographies of high-strength steel AISI 4340 with tensile strength ranging from 1285 to 2363 MPa fabricated by tempering were systematically observed and quantitatively analyzed. It is found that the fatigue crack initiation sites were gradually transferred from the specimen surface to the interior with increasing the tensile strength or decreasing the stress amplitude. Such phenomenon has become common rule in the high-cycle fatigue (HCF) or VHCF regimes of high-strength steels. Based on the fracture mechanics, a simplified transition mechanism for fatigue crack initiation sites is established in terms of the influence of applied stress amplitude and microstructure, which is beneficial to enhance our understanding on the variation of fatigue strength increasing the tensile strength. The effects of tempering temperature on fatigue crack initiation are studied. The sites of fatigue crack initiation is counted, and influence mechanism is discussed. A model is proposed to explain the relationship between tensile and fatigue strength.
关键词	AISI 4340 steel fatigue cracking mechanism fractography stress intensity factor very high-cycle fatigue
资助者	National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC)
DOI	10.1111/ffe.14437
收录类别	SCI
语种	英语
资助项目	National Key Research and Development Program of China ; National Natural Science Foundation of China (NSFC)[52130002] ; National Natural Science Foundation of China (NSFC)[52321001] ; [2022YFB3708200]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS记录号	WOS:001307023800001
出版者	WILEY
引用统计
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/189668
专题	中国科学院金属研究所
通讯作者	Pang, Jianchao; Zhang, Zhefeng
作者单位	1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang, Peoples R China
推荐引用方式 GB/T 7714	Teng, Xiaoyuan,Pang, Jianchao,Gao, Chong,et al. Fatigue crack initiation site transition of high-strength steel under very high-cycle fatigue[J]. FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,2024:15.
APA	Teng, Xiaoyuan,Pang, Jianchao,Gao, Chong,Li, Shouxin,&Zhang, Zhefeng.(2024).Fatigue crack initiation site transition of high-strength steel under very high-cycle fatigue.FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES,15.
MLA	Teng, Xiaoyuan,et al."Fatigue crack initiation site transition of high-strength steel under very high-cycle fatigue".FATIGUE & FRACTURE OF ENGINEERING MATERIALS & STRUCTURES (2024):15.