Investigation on the dwell fatigue behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy
文献类型：期刊论文
| 作者 | Fang, Chao1,2; Qiu, Jianke1,2; Zhang, Mingjie1,2; Zhang, Mengmeng1,2; Ma, Yingjie1,2; Lei, Jiafeng1,2; Yang, Rui1,2 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2024-12-01 |
| 卷号 | 918页码:15 |
| 关键词 | TC11 alloy Dwell fatigue Macrozone Facets |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2024.147430 |
| 通讯作者 | Qiu, Jianke(jkqiu@imr.ac.cn) |
| 英文摘要 | In this work, the dwell sensitivity of the TC11 alloy was evaluated as a function of alpha(p) contents obtained by two different heat treatment routes and peak applied stresses. The equiaxed microstructure had higher alpha(p) content and sharper macrozones, with consequently exhibiting higher dwell sensitivity than the bimodal microstructure. In order to elucidate the dwell fatigue cracking mechanism, the electron back-scattering diffraction and quantitative tilt fractography techniques were employed to determine the crystallographic and spatial orientations of the facets on the fractures. The results indicated that the initiation facets nearly cracked along the basal plane, whereas the propagation facets deviated from the basal plane with an average angle of similar to 13 degrees for both microstructures. Based on the measurements of the facet orientation, a method was proposed that the macrozone filtered with a threshold of 35 degrees could be used as a reliable microstructure characteristic for assessing the dwell sensitivity and predicting the crack initiation sites in TC11 alloy. Specifically, a basal plane of soft-oriented grain in this hard macrozone, which had the largest c-axis inclination and basal Schmid factor compared to its surrounding grains, was more prone to the crack initiation. |
| 资助项目 | National Key R&D Program of China[2022YFB3708300] ; National Key R&D Program of China[2021YFC2800500] ; CAS Project for Young Scientists in Basic Research[YSBR-025] ; Youth Innovation Promotion Association CAS[2022188] ; National Natural Science Foundation of China[91960202] ; National Natural Science Foundation of China[51701219] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001349421800001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Key R&D Program of China ; CAS Project for Young Scientists in Basic Research ; Youth Innovation Promotion Association CAS ; National Natural Science Foundation of China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Qiu, Jianke |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Fang, Chao,Qiu, Jianke,Zhang, Mingjie,et al. Investigation on the dwell fatigue behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,918:15. |
| APA | Fang, Chao.,Qiu, Jianke.,Zhang, Mingjie.,Zhang, Mengmeng.,Ma, Yingjie.,...&Yang, Rui.(2024).Investigation on the dwell fatigue behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,918,15. |
| MLA | Fang, Chao,et al."Investigation on the dwell fatigue behavior of Ti-6.5Al-3.5Mo-1.5Zr-0.3Si alloy".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 918(2024):15. |
入库方式： OAI收割
来源：金属研究所
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