Interior initiation and early growth of very high cycle fatigue crack in an additively manufactured Ti-alloy

doi:10.1016/j.ijfatigue.2022.106862

IMECH-IR > 非线性力学国家重点实验室

	Interior initiation and early growth of very high cycle fatigue crack in an additively manufactured Ti-alloy
	Chi, Weiqian 1,2; Li G(李根)2; Wang, Wenjing 1; Sun CQ(孙成奇)2,3
通讯作者	Wang, Wenjing(wjwang@bjtu.edu.cn) ; Sun, Chengqi(scq@lnm.imech.ac.cn)
发表期刊	INTERNATIONAL JOURNAL OF FATIGUE
	2022-07-01
卷号	160 页码:9
ISSN	0142-1123
摘要	Very high cycle fatigue of an additively manufactured Ti-6Al-4V is studied at R =-1, 0.1 and 0.2. The fracture surface of crack initiation and early growth region presents fine granular area (FGA) morphology with discon-tinuous regions of nanograins. The equivalent crack growth rate in FGA is in the magnitude of 10(-13)-10(-11) m/cyc based on the "tree ring" patterns marked on fracture surface. Interior crack initiation and early growth is attributed to the cracks caused by nanograins formed during fatigue loading and the cracks formed irrespective of nanograins. The crack growth rate in FGA is also used to predict the fatigue life.
关键词	Additively manufactured titanium alloy Very high cycle fatigue Interior crack initiation Ultralow crack growth rate Grain refinement
DOI	10.1016/j.ijfatigue.2022.106862
收录类别	SCI ; EI
语种	英语
WOS记录号	WOS:000793136300001
关键词[WOS]	HIGH-STRENGTH STEELS ; E D FUSION ; LIFE ; BEHAVIOR ; MECHANISM ; TI-6AL-4V ; MICROSTRUCTURE ; PROPAGATION ; PERFORMANCE ; THRESHOLD
WOS研究方向	Engineering ; Materials Science
WOS类目	Engineering, Mechanical ; Materials Science, Multidisciplinary
资助项目	National Natural Science Foundation of China Basic Science Center for Multiscale Problems in Nonlinear Mechanics[11988102] ; Science and Technology Research and Development Program of China State Railway Group Co., Ltd.[P2020J024] ; National Natural Science Foundation of China[91860112]
项目资助者	National Natural Science Foundation of China Basic Science Center for Multiscale Problems in Nonlinear Mechanics ; Science and Technology Research and Development Program of China State Railway Group Co., Ltd. ; National Natural Science Foundation of China
论文分区	一类
力学所作者排名	1
RpAuthor	Wang, Wenjing ; Sun, Chengqi
引用统计	被引频次：18[WOS] [WOS记录] [WOS相关记录]
文献类型	期刊论文
条目标识符	http://dspace.imech.ac.cn/handle/311007/89448
专题	非线性力学国家重点实验室
作者单位	1.Beijing Jiaotong Univ, Key Lab Vehicle Adv Mfg Measuring & Control Techn, Minist Educ, Beijing 100044, Peoples R China; 2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China; 3.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
推荐引用方式 GB/T 7714	Chi, Weiqian,Li G,Wang, Wenjing,et al. Interior initiation and early growth of very high cycle fatigue crack in an additively manufactured Ti-alloy[J]. INTERNATIONAL JOURNAL OF FATIGUE,2022,160:9.
APA	Chi, Weiqian,李根,Wang, Wenjing,&孙成奇.(2022).Interior initiation and early growth of very high cycle fatigue crack in an additively manufactured Ti-alloy.INTERNATIONAL JOURNAL OF FATIGUE,160,9.
MLA	Chi, Weiqian,et al."Interior initiation and early growth of very high cycle fatigue crack in an additively manufactured Ti-alloy".INTERNATIONAL JOURNAL OF FATIGUE 160(2022):9.

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