Crack initiation mechanisms under two stress ratios up to very-high-cycle fatigue regime for a selective laser melted Ti-6Al-4V
文献类型：期刊论文
| 作者 | Du LM(杜雷鸣)1,2; Pan XN(潘向南)2 ; Qian GA(钱桂安)2; Zheng L(郑亮)1; Hong YS(洪友士)2
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| 刊名 | INTERNATIONAL JOURNAL OF FATIGUE
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| 出版日期 | 2021-08-01 |
| 卷号 | 149页码:10 |
| ISSN号 | 0142-1123 |
| 关键词 | Very-high-cycle fatigue Crack initiation mechanism Stress ratio Ti-6Al-4V Selective laser melting |
| DOI | 10.1016/j.ijfatigue.2021.106294 |
| 通讯作者 | Zheng, Liang(icon_lzheng@hit.edu.cn) ; Hong, Youshi(hongys@imech.ac.cn) |
| 英文摘要 | 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. |
| 分类号 | 一类 |
| WOS关键词 | ADDITIVELY MANUFACTURED TI-6AL-4V ; TITANIUM-ALLOY ; BEHAVIOR ; MICROSTRUCTURE ; STRENGTH ; TI6AL4V ; GROWTH ; LIFE |
| 资助项目 | 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] |
| WOS研究方向 | Engineering ; Materials Science |
| 语种 | 英语 |
| WOS记录号 | WOS:000655655900001 |
| 资助机构 | National Natural Science Foundation of China ; Strategic Priority Research Program of the Chinese Academy of Sciences |
| 其他责任者 | Zheng, Liang ; Hong, Youshi |
| 源URL | [http://dspace.imech.ac.cn/handle/311007/86940]  |
| 专题 | 力学研究所_非线性力学国家重点实验室 |
| 作者单位 | 1.Harbin Inst Technol, Sch Sci, Shenzhen 518055, Peoples R China 2.Chinese Acad Sci, Inst Mech, LNM, Beijing 100190, Peoples R China; |
| 推荐引用方式 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. |
| 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. |
入库方式： OAI收割
来源：力学研究所
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