The interface effect on crack nucleation under dwell fatigue loading in dual-phase Ti alloy
文献类型：期刊论文
| 作者 | Zhang, Linglei1,2; Jiang, Binbin1; Qiu, Jianke3; Cao, Xumeng1,2; Lei, Jiafeng3; Yang, Rui3; Du, Kui1 |
| 刊名 | INTERNATIONAL JOURNAL OF PLASTICITY
 |
| 出版日期 | 2023-12-01 |
| 卷号 | 171页码:18 |
| 关键词 | Dislocations Crack mechanisms Electron microscopy Titanium alloys Cyclic loading |
| ISSN号 | 0749-6419 |
| DOI | 10.1016/j.ijplas.2023.103816 |
| 通讯作者 | Jiang, Binbin(bbjiang12s@imr.ac.cn) ; Du, Kui(kuidu@imr.ac.cn) |
| 英文摘要 | The microstructure of dual-phase Ti alloys crucially influences the nucleation of dwell fatigue cracks, which is of significance in determining the dwell fatigue life of Ti alloys. However, the microstructure effect on crack nucleation in dwell fatigue is still in dispute, and direct experi-mental investigation is desired. Here, we report that the probability of dwell fatigue cracks nucleating at grain boundaries between colonies and primary alpha grains is approximately one-fifth of that nucleating at grain boundaries between primary alpha grains. Three dislocation reaction mechanisms are determined for dislocation transmission through alpha s/beta interfaces in colonies, two of which strongly obstruct and disperse dislocations, while the third mechanism leads to concentrated slip bands of dislocations during dwell cycle loading. As decreasing the localization of dislocation slips can effectively reduce the stress concentration at grain boundaries in colonies, it significantly decreases the possibility of crack nucleation. This demonstrates a quantitative relationship between the localization of dislocation slips and the probability of dwell-fatigue crack nucleation. The results provide insights into the quantitative analysis of the microstruc-ture effect on crack nucleation in Ti alloys. |
| 资助项目 | National Natural Science Foundation of China[91960202] ; National Natural Science Foundation of China[52171020] ; National Natural Science Foundation of China[51901229] ; National Natural Science Foundation of China[51701219] ; CAS Project for Young Scientists in Basic Research[YSBR-025] ; Youth Innovation Promotion Association CAS[2022188] ; Institute of Metal Research, Chinese Academy of Sciences[552021-PY07] |
| WOS研究方向 | Engineering ; Materials Science ; Mechanics |
| 语种 | 英语 |
| WOS记录号 | WOS:001125038100001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China ; CAS Project for Young Scientists in Basic Research ; Youth Innovation Promotion Association CAS ; Institute of Metal Research, Chinese Academy of Sciences |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Jiang, Binbin; Du, Kui |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, Linglei,Jiang, Binbin,Qiu, Jianke,et al. The interface effect on crack nucleation under dwell fatigue loading in dual-phase Ti alloy[J]. INTERNATIONAL JOURNAL OF PLASTICITY,2023,171:18. |
| APA | Zhang, Linglei.,Jiang, Binbin.,Qiu, Jianke.,Cao, Xumeng.,Lei, Jiafeng.,...&Du, Kui.(2023).The interface effect on crack nucleation under dwell fatigue loading in dual-phase Ti alloy.INTERNATIONAL JOURNAL OF PLASTICITY,171,18. |
| MLA | Zhang, Linglei,et al."The interface effect on crack nucleation under dwell fatigue loading in dual-phase Ti alloy".INTERNATIONAL JOURNAL OF PLASTICITY 171(2023):18. |
入库方式： OAI收割
来源：金属研究所
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