Microstructure evolution during the liquid-liquid phase transformation of Al-Bi alloys under the effect of TiC particles
文献类型：期刊论文
| 作者 | Sun, Qian ; Jiang, Hongxiang ; Zhao, Jiuzhou ; He, Jie |
| 刊名 | ACTA MATERIALIA
 |
| 出版日期 | 2017-05-01 |
| 卷号 | 129页码:321-330 |
| 关键词 | Heterogeneous nucleation of phase Precipitation Phase transformation Modelling Microstructure |
| ISSN号 | 1359-6454 |
| 通讯作者 | Zhao, JZ (reprint author), Chinese Acad Sci, Inst Met Res, Shenyang 110016, Peoples R China. |
| 中文摘要 | Solidification experiments were carried out for Al-Bi alloys with the addition of TiC. It is demonstrated that the average size of the Bi-rich minority phase particles (MPPs) shows a tendency of keeping constant, increasing, decreasing and then keeping constant again with the increase of the additive amount of TiC. The MPPs can be refined effectively with the addition of an appropriate amount of TIC. A model was developed to describe the kinetic behavior of the TiC particles in the melt and the microstructure evolution during the liquid-liquid (L-L) phase transformation of the Al-Bi alloys with the addition of TiC. The numerical results show that TiC particles may dissolve and coarsen during the heating period, and precipitate out during the cooling period of the melt. There may be two kinds of TiC particles: the one remained during holding temperature and the one precipitated during a cooling of the melt. Both of them can work as the inoculants for the nucleation of the minority phase droplets. What determines the refining efficiency is the resultant number density of the TiC particles in the melt cooled to the binodal line temperature. This research demonstrates that inoculation is an effective method for controlling the L-L phase transformation. The addition of the efficient inoculant may promote the formation of a monotectic alloy with a well dispersed microstructure. (C) 2017 Published by Elsevier Ltd on behalf of Acta Materialia Inc. |
| 学科主题 | Materials Science, Multidisciplinary ; Metallurgy & Metallurgical Engineering |
| 收录类别 | SCI |
| 资助信息 | National Natural Science Foundation of China [51471173, 51501207, 51374194, 51271185]; China Manned Space Engineering [TGJZ800-2-RW024]; Natural Science Foundation of Liaoning Province [201501043] |
| 语种 | 英语 |
| 公开日期 | 2017-08-17 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/78167]  |
| 专题 | 金属研究所_中国科学院金属研究所 |
| 推荐引用方式 GB/T 7714 | Sun, Qian,Jiang, Hongxiang,Zhao, Jiuzhou,et al. Microstructure evolution during the liquid-liquid phase transformation of Al-Bi alloys under the effect of TiC particles[J]. ACTA MATERIALIA,2017,129:321-330. |
| APA | Sun, Qian,Jiang, Hongxiang,Zhao, Jiuzhou,&He, Jie.(2017).Microstructure evolution during the liquid-liquid phase transformation of Al-Bi alloys under the effect of TiC particles.ACTA MATERIALIA,129,321-330. |
| MLA | Sun, Qian,et al."Microstructure evolution during the liquid-liquid phase transformation of Al-Bi alloys under the effect of TiC particles".ACTA MATERIALIA 129(2017):321-330. |
入库方式： OAI收割
来源：金属研究所
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