Nanograin formation and cracking mechanism in Ti alloys under very high cycle fatigue loading

doi:10.1016/j.ijfatigue.2022.107331

IMR OpenIR

	Nanograin formation and cracking mechanism in Ti alloys under very high cycle fatigue loading
	Sun, Chengqi 1,2; Wu, Han 1,2; Chi, Weiqian 1,3; Wang, Wenjing 3; Zhang, Guang-Ping 4
通讯作者	Sun, Chengqi(scq@lnm.imech.ac.cn) ; Zhang, Guang-Ping(gpzhang@imr.ac.cn)
	2023-02-01
发表期刊	INTERNATIONAL JOURNAL OF FATIGUE
ISSN	0142-1123
卷号	167 页码:10
摘要	This paper shows that nanograins appear in a locally high-stress region for very high cycle fatigue of TC17 alloy, and twinning is a main contributor to nanograin formation. The locally high stress results in twinning or slip in preferentially oriented alpha grains. Then, the interaction between twin systems or dislocations induces the forma-tion of dislocation cells or walls, nucleation of microbands, and finally the nanograins. As a result, the nanograin regions and the boundaries between the nanograin and coarse grain regions become preferential sites for crack initiation and early growth. The finite element analysis demonstrates the nanograin-related fatigue cracking behavior.
关键词	Titanium alloy Very high cycle fatigue Twinning Nanograins Cracking mechanism
资助者	National Natural Science Foundation of China Basic Science Center for Multiscale Problems in Nonlinear Mechanics ; National Natural Science Foundation of China
DOI	10.1016/j.ijfatigue.2022.107331
收录类别	SCI
语种	英语
资助项目	National Natural Science Foundation of China Basic Science Center for Multiscale Problems in Nonlinear Mechanics[11988102] ; National Natural Science Foundation of China[91860112]
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
WOS记录号	WOS:000892574700002
出版者	ELSEVIER SCI LTD
引用统计	被引频次：21[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/321006/176123
专题	中国科学院金属研究所
通讯作者	Sun, Chengqi; Zhang, Guang-Ping
作者单位	1.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China 2.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China 3.Beijing Jiaotong Univ, Key Lab Vehicle Adv Mfg Measuring & Control Techno, Minist Educ, Beijing 100044, Peoples R China 4.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China
推荐引用方式 GB/T 7714	Sun, Chengqi,Wu, Han,Chi, Weiqian,et al. Nanograin formation and cracking mechanism in Ti alloys under very high cycle fatigue loading[J]. INTERNATIONAL JOURNAL OF FATIGUE,2023,167:10.
APA	Sun, Chengqi,Wu, Han,Chi, Weiqian,Wang, Wenjing,&Zhang, Guang-Ping.(2023).Nanograin formation and cracking mechanism in Ti alloys under very high cycle fatigue loading.INTERNATIONAL JOURNAL OF FATIGUE,167,10.
MLA	Sun, Chengqi,et al."Nanograin formation and cracking mechanism in Ti alloys under very high cycle fatigue loading".INTERNATIONAL JOURNAL OF FATIGUE 167(2023):10.