| Crack initiation mechanisms under two stress ratios up to very-high-cycle fatigue regime for a selective laser melted Ti-6Al-4V | |
Du LM(杜雷鸣)1,2; Pan XN(潘向南)1; Qian GA(钱桂安)1 ; Zheng L(郑亮)2; Hong YS(洪友士)1
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| Corresponding Author | Zheng, Liang([email protected]) ; Hong, Youshi([email protected]) |
| Source Publication | INTERNATIONAL JOURNAL OF FATIGUE
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| 2021-08-01 | |
| Volume | 149Pages:10 |
| ISSN | 0142-1123 |
| Abstract | Crack initiation mechanisms under two stress ratios (R = - 1 and 0.5) and up to very-high-cycle fatigue (VHCF) regime of a selective laser melted (SLMed) Ti-6Al-4V were investigated. Type I lack-of-fusion defects (almost equiaxed) induced crack initiation except for the cases of VHCF under R = 0.5 in which type II defects (large aspect ratio) caused facet mode crack initiation. A nanograin layer formed underneath the crack initiation region of rough area for the cases of VHCF at R = - 1, which was explained by the numerous cyclic pressing (NCP) model. A P-S-N approach was introduced to well describe the fatigue life up to VHCF regime under R = - 1 and 0.5 for the SLMed titanium alloy. |
| Keyword | Very-high-cycle fatigue Crack initiation mechanism Stress ratio Ti-6Al-4V Selective laser melting |
| DOI | 10.1016/j.ijfatigue.2021.106294 |
| Indexed By | SCI ; EI |
| Language | 英语 |
| WOS ID | WOS:000655655900001 |
| WOS Keyword | ADDITIVELY MANUFACTURED TI-6AL-4V ; TITANIUM-ALLOY ; BEHAVIOR ; MICROSTRUCTURE ; STRENGTH ; TI6AL4V ; GROWTH ; LIFE |
| WOS Research Area | Engineering ; Materials Science |
| WOS Subject | Engineering, Mechanical ; Materials Science, Multidisciplinary |
| Funding Project | National Natural Science Foundation of China[11932020] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22040503] ; Strategic Priority Research Program of the Chinese Academy of Sciences[XDB22020201] |
| Funding Organization | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences |
| Classification | 一类 |
| Ranking | 1 |
| Contributor | Zheng, Liang ; Hong, Youshi |
| Citation statistics | |
| Document Type | 期刊论文 |
| Identifier | http://dspace.imech.ac.cn/handle/311007/86941 |
| Collection | 非线性力学国家重点实验室 |
| Affiliation | 1.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; 2.Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China |
| Recommended Citation GB/T 7714 | Du LM,Pan XN,Qian GA,et al. Crack initiation mechanisms under two stress ratios up to very-high-cycle fatigue regime for a selective laser melted Ti-6Al-4V[J]. INTERNATIONAL JOURNAL OF FATIGUE,2021,149:10.Rp_Au:Zheng, Liang, Hong, Youshi |
| APA | 杜雷鸣,潘向南,钱桂安,郑亮,&洪友士.(2021).Crack initiation mechanisms under two stress ratios up to very-high-cycle fatigue regime for a selective laser melted Ti-6Al-4V.INTERNATIONAL JOURNAL OF FATIGUE,149,10. |
| MLA | 杜雷鸣,et al."Crack initiation mechanisms under two stress ratios up to very-high-cycle fatigue regime for a selective laser melted Ti-6Al-4V".INTERNATIONAL JOURNAL OF FATIGUE 149(2021):10. |
| Files in This Item: | ||||||
| File Name/Size | DocType | Version | Access | License | ||
| Jp2021F282.pdf（14294KB） | 期刊论文 | 出版稿 | 开放获取 | CC BY-NC-SA | View Application Full Text | |
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