Microstructure formation of rapidly/sub-rapidly solidified Gd-Co-Ti immiscible alloys
文献类型：期刊论文
| 作者 | Sun, Hao1,2; Jiang, Hongxiang1,2; Ma, Haobo1,2; Han, Binghao1,2; Zhang, Lili1,2; He, Jie1,2; Zhao, Jiuzhou1,2 |
| 刊名 | JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
 |
| 出版日期 | 2024-11-01 |
| 卷号 | 33页码:28-38 |
| 关键词 | Immiscible alloy Composite microstructure Solidification process Liquid-liquid phase separation Modeling and simulation |
| ISSN号 | 2238-7854 |
| DOI | 10.1016/j.jmrt.2024.09.024 |
| 通讯作者 | Jiang, Hongxiang(hxjiang@imr.ac.cn) ; Zhao, Jiuzhou(jzzhao@imr.ac.cn) |
| 英文摘要 | Solidification experiments were conducted for ternary Gd-Co-Ti immiscible alloys by copper mold casting. The impacts of the composition and cooling rate on the microstructure features and the properties were investigated. The samples with a composite microstructure were acquired, in which the subglobose TiCo-rich particles homogeneously distribute in the Gd matrix. The microhardness of Gd-Co-Ti alloys increases with the content of Co and Ti and the cooling rate during solidification. To describe the microstructure formation of Gd-Co-Ti immiscible alloys during rapid/sub-rapid solidification, a theoretical model was proposed, and it takes into consideration the comprehensive effects of the nucleation, diffusional growth and spatial motions of the TiCo-rich phase droplets. The solidification microstructure evolution was simulated. The numerical results are well consistent with the experimental data, which verifies the validity of the developed model. Calculations demonstrate that the nucleation of the TiCo-rich droplets only takes place in the liquid-liquid transformation stage, and no nucleation events of the TiCo-rich droplets occurs in the liquid-liquid-solid three-phase transformation stage. The number density (N) and maximum nucleation rate (I-max) of the TiCo-rich droplets/particles is exponentially associated with the cooling rate (T-nuc) of the alloy during the nucleation period of the TiCo-rich droplets. Besides, the Ostwald coarsening of TiCo-rich phase droplets can be ignored under the current cooling conditions. |
| 资助项目 | China's Manned Space Station Project, China ; National Key Research and Development Program of China, China[2021YFA0716303] ; Na-tional Natural Science Foundation of China, China[52174380] ; Space Utilization System of China Manned Space Engineering, China[KJZ-YY-NCL06] ; Natural Science Foundation of Liaoning Province, China[2023-MS-023] |
| WOS研究方向 | Materials Science ; Metallurgy & Metallurgical Engineering |
| 语种 | 英语 |
| WOS记录号 | WOS:001314892000001 |
| 出版者 | ELSEVIER |
| 资助机构 | China's Manned Space Station Project, China ; National Key Research and Development Program of China, China ; Na-tional Natural Science Foundation of China, China ; Space Utilization System of China Manned Space Engineering, China ; Natural Science Foundation of Liaoning Province, China |
| 源URL |  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 通讯作者 | Jiang, Hongxiang; Zhao, Jiuzhou |
| 作者单位 | 1.Chinese Acad Sci, Inst Met Res, Shi changxu Innovat Ctr Adv Mat, Shenyang 110016, Peoples R China 2.Univ Sci & Technol China, Sch Mat Sci & Engn, Shenyang 110016, Peoples R China |
| 推荐引用方式 GB/T 7714 | Sun, Hao,Jiang, Hongxiang,Ma, Haobo,et al. Microstructure formation of rapidly/sub-rapidly solidified Gd-Co-Ti immiscible alloys[J]. JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,2024,33:28-38. |
| APA | Sun, Hao.,Jiang, Hongxiang.,Ma, Haobo.,Han, Binghao.,Zhang, Lili.,...&Zhao, Jiuzhou.(2024).Microstructure formation of rapidly/sub-rapidly solidified Gd-Co-Ti immiscible alloys.JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T,33,28-38. |
| MLA | Sun, Hao,et al."Microstructure formation of rapidly/sub-rapidly solidified Gd-Co-Ti immiscible alloys".JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T 33(2024):28-38. |
入库方式： OAI收割
来源：金属研究所
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