A new fatigue crack growth mechanism of high-strength steels

doi:10.1016/j.msea.2022.142969

CORC > 金属研究所 > 中国科学院金属研究所

	A new fatigue crack growth mechanism of high-strength steels
	Li, H. F.1,2; Zhang, P.1; Zhang, Z. F.1
刊名	MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
	2022-04-18
卷号	840 页码:9
关键词	Fatigue crack growth Three-dimensional X-ray High-strength steels Mixed mechanism
ISSN号	0921-5093
DOI	10.1016/j.msea.2022.142969
通讯作者	Zhang, P.(pengzhang@imr.ac.cn) ; Zhang, Z. F.(zhfzhang@imr.ac.cn)
英文摘要	In this study, the fatigue crack damage evolution procedure of AISI 4340 high-strength steel was systematically studied via three-dimensional X-ray technology and scanning electron microscopy. Based on the experimental results and theoretical analysis, a new FCG mechanism is proposed, i.e. the blunting and re-sharpening to microscale void coalescence (BRS-MVC) mixed mechanism. Few micro-scale voids initiated near the crack tip are surrounded by the blunting crack tip at low Delta K zone, which is controlled by the BRS mechanism. More microscale void clusters would occur around the crack tip at high Delta K zone, which may be attributed to the MVC mechanism. The new FCG mechanism provides a unique perspective for the FCG behavior of high-strength steels, which could promote the fatigue life prediction of metallic materials.
资助项目	National Natural Science Foundation of China[12102275] ; National Natural Science Foundation of China[52130002] ; National Natural Science Foundation of China[U1664253] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22020202] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDC04040502] ; LiaoNing Revitalization Talents Program[XLYC1808027] ; Youth Innovation Pro-motion Association CAS[2018226]
WOS研究方向	Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering
语种	英语
出版者	ELSEVIER SCIENCE SA
WOS记录号	WOS:000781373400003
资助机构	National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences ; LiaoNing Revitalization Talents Program ; Youth Innovation Pro-motion Association CAS
内容类型	期刊论文
源URL	[http://ir.imr.ac.cn/handle/321006/172875]
专题	金属研究所_中国科学院金属研究所
通讯作者	Zhang, P.; Zhang, Z. F.
作者单位	1.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 2.Shijiazhuang Tiedao Univ, State Key Lab Mech Behav & Syst Safety Traff Engn, Shijiazhuang 050043, Hebei, Peoples R China
推荐引用方式 GB/T 7714	Li, H. F.,Zhang, P.,Zhang, Z. F.. A new fatigue crack growth mechanism of high-strength steels[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2022,840:9.
APA	Li, H. F.,Zhang, P.,&Zhang, Z. F..(2022).A new fatigue crack growth mechanism of high-strength steels.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,840,9.
MLA	Li, H. F.,et al."A new fatigue crack growth mechanism of high-strength steels".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 840(2022):9.