Tensile behavior of cast γ-TiAl alloys with varied boride morphologies
文献类型：期刊论文
| 作者 | Cao, Ruxin1,2; Liu, Renci1,2; Yang, Chao3; Zhu, Zuohai2; Wang, Yaran2; Cui, Yuyou1,2; Yang, Rui1,2 |
| 刊名 | MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
 |
| 出版日期 | 2023-11-17 |
| 卷号 | 888页码:11 |
| 关键词 | gamma-TiAl Cast Boride Morphology Tensile behavior |
| ISSN号 | 0921-5093 |
| DOI | 10.1016/j.msea.2023.145807 |
| 通讯作者 | Liu, Renci(rcliu@imr.ac.cn) |
| 英文摘要 | Boride particles of various sizes and morphologies were obtained by adjusting the boron content and solidification rate of castings in Ti-45Al-2Mn-2Nb alloys. The initial and deformation microstructures, as well as the tensile properties at 25 degrees C and 650 degrees C, were examined. Furthermore, the fracture behavior of the alloys and the influence of boride particle with different morphologies on the tensile properties were discussed. Boride particles are curved flaky in 0.5B alloys, and varied from straight rod/needle-like to curved ribbon-like with increasing cooling rates in 1B alloys. Abundant phase interfaces, along with the presence of growth stacking faults and lattice distortions, are prominently observed in curved flaky and ribbon-like boride particles. Conversely, straight boride particles exhibit better regularity, with fewer lattice distortions and a lower density of interfaces and stacking faults. At both 25 degrees C and 650 degrees C, samples containing flaky boride particles exhibit the highest yield strength but the lowest elongation, while samples containing rod/needle-like boride particles show the lowest yield strength but the highest elongation. Curved boride particles exhibited no deformation, while their interfaces with the matrix accumulated a significant volume fraction of dislocations. This accumulation of dislocations causes stress concentration and created sites for the initiation of cracks. Additionally, the larger surface area of flaky boride particles promotes the growth of larger cracks, thus reducing ductility. On the other hand, straight rod/needle-like particles underwent deformation, resulting in the formation of deformation stacking faults on (0001) of C32-TiB2 and (10 1) of B27-TiB, showing better deformation compatibility between the borides and matrix. |
| 资助项目 | CAS Project for Young Scientists in Basic Research[YSBR-025] ; Major Special Science and Technology Project of Yunnan Province[202302AB080009] ; National Key Research and Development Program of China[2021YFB3702605] ; National Major science and Technology Projects of China[J2019-VII-0002-0142] |
| WOS研究方向 | Science & Technology - Other Topics ; Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001106816700001 |
| 出版者 | ELSEVIER SCIENCE SA |
| 资助机构 | CAS Project for Young Scientists in Basic Research ; Major Special Science and Technology Project of Yunnan Province ; National Key Research and Development Program of China ; National Major science and Technology Projects of China |
| 源URL | [http://ir.imr.ac.cn/handle/321006/177228]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Liu, Renci |
| 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 3.AECC Commercial Aeroengine Co LTD, Shanghai 200241, Peoples R China |
| 推荐引用方式 GB/T 7714 | Cao, Ruxin,Liu, Renci,Yang, Chao,et al. Tensile behavior of cast γ-TiAl alloys with varied boride morphologies[J]. MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,2023,888:11. |
| APA | Cao, Ruxin.,Liu, Renci.,Yang, Chao.,Zhu, Zuohai.,Wang, Yaran.,...&Yang, Rui.(2023).Tensile behavior of cast γ-TiAl alloys with varied boride morphologies.MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING,888,11. |
| MLA | Cao, Ruxin,et al."Tensile behavior of cast γ-TiAl alloys with varied boride morphologies".MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING 888(2023):11. |
入库方式： OAI收割
来源：金属研究所
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