Effect of Al content on the fracture toughness and deformation behavior of Ti-Al binary alloys
文献类型：期刊论文
| 作者 | Weng, Hanbo1,2; Wang, Qian2; Ma, Yingjie1,2,3; Xu, Daokui4; Huang, Sensen2; Qi, Min2; Qiu, Jianke1,2; Lei, Jiafeng1,2; Yang, Rui1,2 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2024-09-01 |
| 卷号 | 911页码:15 |
| 关键词 | Ti-xAl alloys Al content Fracture toughness J-integral Deformation behavior |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2024.146914 |
| 通讯作者 | Ma, Yingjie(yjma@imr.ac.cn) ; Xu, Daokui(dkxu@imr.ac.cn) |
| 英文摘要 | The fracture toughness and deformation behavior of Ti- x Al ( x = 0, 2, 4 wt%) binary alloys were investigated. The non-thickness-dependent fracture toughness was measured based on the J-integral multiple-sample approach. Increased Al content induced reduced fracture toughness from 265 to 148 MPa & sdot; m 1/2 of Ti- x Al alloys. The fracture toughness was discussed in this article by the mutual influence of the elastic component ( J el ) and the plastic component ( J pl ). The solid solution strengthening effect of Al was identified as the primary factor contributing to the increase in J el . Additionally, the evolution mechanism of J pl with varying Al content was elucidated by slip modes, twin activation, and dislocation configurations at the crack tip. Prismatic slip was found to be the predominant slip mode in Ti- x Al alloys. With the increase in Al content, the elevated critical resolved shear stress associated with prismatic slip hindered the alleviation of stress concentration, resulting in a decrease in J pl . The increase in content of Al in the Ti- x Al alloys inhibited the formation of {11 2 2} twins. Compared to Ti-0Al and Ti-2Al alloys, a significant increase in c c a dislocations, which potentially resulted in a reduction in J(pl) . Furthermore, a crack tip stress analysis method based on twin variant activation was proposed. In Ti-0Al and Ti-2Al alloys, twins activated by internal stress were more pronounced compared to the Ti-4Al alloy. The internal stress may be composed of back stresses, which are generated by twinning activation. |
| 资助项目 | National Key Research and Development Program of China[2021YFC2801801] ; Natural Science Foundation of China[U2106215] ; CAS Project for Young Scientists in Basic Research[YSBR-025] ; Youth Innovation Promotion Association CAS ; Liaoning Provincial Natural Science Foundation of China[2023 -BS-018] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001272362100001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | National Key Research and Development Program of China ; Natural Science Foundation of China ; CAS Project for Young Scientists in Basic Research ; Youth Innovation Promotion Association CAS ; Liaoning Provincial 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 | Ma, Yingjie; Xu, Daokui |
| 作者单位 | 1.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China 2.Chinese Acad Sci, Shi Changxu Innovat Ctr Adv Mat, Inst Met Res, Shenyang 110016, Peoples R China 3.Chinese Acad Sci, Inst Met Res, Shenyang Natl Lab Mat Sci, Wenhua Rd 72, Shenyang 110016, Peoples R China 4.Chinese Acad Sci, Key Lab Nucl Mat & Safety Assessment, Inst Met Res, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Weng, Hanbo,Wang, Qian,Ma, Yingjie,et al. Effect of Al content on the fracture toughness and deformation behavior of Ti-Al binary alloys[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2024,911:15. |
| APA | Weng, Hanbo.,Wang, Qian.,Ma, Yingjie.,Xu, Daokui.,Huang, Sensen.,...&Yang, Rui.(2024).Effect of Al content on the fracture toughness and deformation behavior of Ti-Al binary alloys.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,911,15. |
| MLA | Weng, Hanbo,et al."Effect of Al content on the fracture toughness and deformation behavior of Ti-Al binary alloys".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 911(2024):15. |
入库方式： OAI收割
来源：金属研究所
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