Achieving superior fatigue strength in a powder-metallurgy titanium alloy via in-situ globularization during hot isostatic pressing
文献类型：期刊论文
| 作者 | Guo, R. P.; Cheng, M.; Zhang, C. J.1; Qiao, J. W.1; Cai, C.2; Wang, Q. J.3; Xu, D. S.3; Xu, L.3; Yang, R.3; Shi, Y. S.2 |
| 刊名 | SCRIPTA MATERIALIA
 |
| 出版日期 | 2023-04-15 |
| 卷号 | 228页码:6 |
| 关键词 | Titanium alloys Hot isostatic pressing Globularization Fatigue strength Fatigue-crack initiation |
| ISSN号 | 1359-6462 |
| DOI | 10.1016/j.scriptamat.2023.115345 |
| 通讯作者 | Qiao, J. W.(qiaojunwei@gmail.com) ; Cai, C.(chaocai@hust.edu.cn) ; Xu, L.(lxu@imr.ac.cn) |
| 英文摘要 | Powder-metallurgy (PM) titanium alloys exhibit outstanding quasistatic-mechanical properties, but suffer from low fatigue performance, which severely limits their applications in aerospace. Here, we achieve a superior fatigue strength of 600 MPa in a near-alpha PM titanium alloy, using a two-step hot-isostatic-pressing scheme, during which more than 80 vol.% (volume fraction) randomly orientated equiaxed grains was obtained. The largely improved fatigue strength (similar to 25%) is mainly attributed to the in-situ globularization of the lamella-like microstructure, leading to higher crack nucleation resistance and lower growth rates of short cracks. The present findings offer a useful route for fabricating PM titanium alloys with high fatigue strengths. |
| 资助项目 | National Natural Science Foundation of China[52205407] ; National Natural Science Foundation of China[52171122] ; National Natural Science Foundation of China[51905192] ; Natural Sci- ence Foundation of Shanxi Province, China[202201D211085] ; Key Research and Development Program of Anhui Province[202104a05020053] ; CAS Project for Young Scientists in Basic Research[YSBR-025] ; National Science Foundation[DMR - 1611180] ; National Science Foundation[1809640] ; National Science Foundation[2226508] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:000993509900001 |
| 出版者 | PERGAMON-ELSEVIER SCIENCE LTD |
| 资助机构 | National Natural Science Foundation of China ; Natural Sci- ence Foundation of Shanxi Province, China ; Key Research and Development Program of Anhui Province ; CAS Project for Young Scientists in Basic Research ; National Science Foundation |
| 源URL | [http://ir.imr.ac.cn/handle/321006/178054]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Qiao, J. W.; Cai, C.; Xu, L. |
| 作者单位 | 1.Taiyuan Univ Technol, Coll Mat Sci & Engn, Taiyuan 030024, Peoples R China 2.Huazhong Univ Sci & Technol, State Key Lab Mat Proc & Die & Mould Technol, Wuhan 430074, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China 4.Univ Tennessee, Dept Mat Sci & Engn, Knoxville, TN 37996 USA |
| 推荐引用方式 GB/T 7714 | Guo, R. P.,Cheng, M.,Zhang, C. J.,et al. Achieving superior fatigue strength in a powder-metallurgy titanium alloy via in-situ globularization during hot isostatic pressing[J]. SCRIPTA MATERIALIA,2023,228:6. |
| APA | Guo, R. P..,Cheng, M..,Zhang, C. J..,Qiao, J. W..,Cai, C..,...&Liaw, P. K..(2023).Achieving superior fatigue strength in a powder-metallurgy titanium alloy via in-situ globularization during hot isostatic pressing.SCRIPTA MATERIALIA,228,6. |
| MLA | Guo, R. P.,et al."Achieving superior fatigue strength in a powder-metallurgy titanium alloy via in-situ globularization during hot isostatic pressing".SCRIPTA MATERIALIA 228(2023):6. |
入库方式： OAI收割
来源：金属研究所
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