| Interior initiation and early growth of very high cycle fatigue crack in an additively manufactured Ti-alloy | |
Chi, Weiqian1,2; Li G(李根)2; Wang, Wenjing1; Sun CQ(孙成奇)2,3
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| Corresponding Author | Wang, Wenjing([email protected]) ; Sun, Chengqi([email protected]) |
| Source Publication | INTERNATIONAL JOURNAL OF FATIGUE
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| 2022-07-01 | |
| Volume | 160Pages:9 |
| ISSN | 0142-1123 |
| Abstract | 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. |
| Keyword | Additively manufactured titanium alloy Very high cycle fatigue Interior crack initiation Ultralow crack growth rate Grain refinement |
| DOI | 10.1016/j.ijfatigue.2022.106862 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000793136300001 |
| WOS Keyword | HIGH-STRENGTH STEELS ; E D FUSION ; LIFE ; BEHAVIOR ; MECHANISM ; TI-6AL-4V ; MICROSTRUCTURE ; PROPAGATION ; PERFORMANCE ; THRESHOLD |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary |
| Funding Project | 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] |
| Funding Organization | 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 |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Wang, Wenjing ; Sun, Chengqi |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/89448 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 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 |
| Recommended Citation 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.Rp_Au:Wang, Wenjing, Sun, Chengqi |
| 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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| Jp2022FA278_2022_Int（10381KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Download | |
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