The interface effect on crack nucleation under dwell fatigue loading in dual-phase Ti alloy

doi:10.1016/j.ijplas.2023.103816

IMR OpenIR

	The interface effect on crack nucleation under dwell fatigue loading in dual-phase Ti alloy
	Zhang, Linglei 1,2; Jiang, Binbin 1; Qiu, Jianke 3; Cao, Xumeng 1,2; Lei, Jiafeng 3; Yang, Rui 3; Du, Kui 1
通讯作者	Jiang, Binbin(bbjiang12s@imr.ac.cn) ; Du, Kui(kuidu@imr.ac.cn)
	2023-12-01
发表期刊	INTERNATIONAL JOURNAL OF PLASTICITY
ISSN	0749-6419
卷号	171 页码:18
摘要	The microstructure of dual-phase Ti alloys crucially influences the nucleation of dwell fatigue cracks, which is of significance in determining the dwell fatigue life of Ti alloys. However, the microstructure effect on crack nucleation in dwell fatigue is still in dispute, and direct experi-mental investigation is desired. Here, we report that the probability of dwell fatigue cracks nucleating at grain boundaries between colonies and primary alpha grains is approximately one-fifth of that nucleating at grain boundaries between primary alpha grains. Three dislocation reaction mechanisms are determined for dislocation transmission through alpha s/beta interfaces in colonies, two of which strongly obstruct and disperse dislocations, while the third mechanism leads to concentrated slip bands of dislocations during dwell cycle loading. As decreasing the localization of dislocation slips can effectively reduce the stress concentration at grain boundaries in colonies, it significantly decreases the possibility of crack nucleation. This demonstrates a quantitative relationship between the localization of dislocation slips and the probability of dwell-fatigue crack nucleation. The results provide insights into the quantitative analysis of the microstruc-ture effect on crack nucleation in Ti alloys.
关键词	Dislocations Crack mechanisms Electron microscopy Titanium alloys Cyclic loading
资助者	National Natural Science Foundation of China ; CAS Project for Young Scientists in Basic Research ; Youth Innovation Promotion Association CAS ; Institute of Metal Research, Chinese Academy of Sciences
DOI	10.1016/j.ijplas.2023.103816
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China[91960202] ; National Natural Science Foundation of China[52171020] ; National Natural Science Foundation of China[51901229] ; National Natural Science Foundation of China[51701219] ; CAS Project for Young Scientists in Basic Research[YSBR-025] ; Youth Innovation Promotion Association CAS[2022188] ; Institute of Metal Research, Chinese Academy of Sciences[552021-PY07]
WOS研究方向	Engineering ; Materials Science ; Mechanics
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary ; Mechanics
WOS记录号	WOS:001125038100001
出版者	PERGAMON-ELSEVIER SCIENCE LTD
引用统计	被引频次：12[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/182904
专题	中国科学院金属研究所
通讯作者	Jiang, Binbin; Du, Kui
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 110016, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Zhang, Linglei,Jiang, Binbin,Qiu, Jianke,et al. The interface effect on crack nucleation under dwell fatigue loading in dual-phase Ti alloy[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2023,171:18.
APA	Zhang, Linglei.,Jiang, Binbin.,Qiu, Jianke.,Cao, Xumeng.,Lei, Jiafeng.,...&Du, Kui.(2023).The interface effect on crack nucleation under dwell fatigue loading in dual-phase Ti alloy.INTERNATIONAL JOURNAL OF PLASTICITY,171,18.
MLA	Zhang, Linglei,et al."The interface effect on crack nucleation under dwell fatigue loading in dual-phase Ti alloy".INTERNATIONAL JOURNAL OF PLASTICITY 171(2023):18.