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

文献类型：期刊论文

作者Chi, Weiqian2,3; Li, Gen2; Wang, Wenjing3; Sun, Chengqi1,2; Sun CQ(孙成奇)
刊名INTERNATIONAL JOURNAL OF FATIGUE
出版日期2022-07-01
卷号160页码:9
ISSN号0142-1123
关键词Additively manufactured titanium alloy Very high cycle fatigue Interior crack initiation Ultralow crack growth rate Grain refinement
DOI10.1016/j.ijfatigue.2022.106862
通讯作者Wang, Wenjing(wjwang@bjtu.edu.cn) ; Sun, Chengqi(scq@lnm.imech.ac.cn)
英文摘要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.
WOS关键词HIGH-STRENGTH STEELS ; E D FUSION ; LIFE ; BEHAVIOR ; MECHANISM ; TI-6AL-4V ; MICROSTRUCTURE ; PROPAGATION ; PERFORMANCE ; THRESHOLD
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]
WOS研究方向Engineering ; Materials Science
语种英语
WOS记录号WOS:000793136300001
资助机构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
源URL[http://dspace.imech.ac.cn/handle/311007/89447]  
专题力学研究所_非线性力学国家重点实验室
通讯作者Wang, Wenjing; Sun, Chengqi
作者单位1.Univ Chinese Acad Sci, Sch Engn Sci, Beijing 100049, Peoples R China
2.Chinese Acad Sci, Inst Mech, State Key Lab Nonlinear Mech, Beijing 100190, Peoples R China
3.Beijing Jiaotong Univ, Key Lab Vehicle Adv Mfg Measuring & Control Techn, Minist Educ, Beijing 100044, Peoples R China
推荐引用方式
GB/T 7714		 Chi, Weiqian,Li, Gen,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,Li, Gen,Wang, Wenjing,Sun, Chengqi,&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.

入库方式： OAI收割

来源：力学研究所

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