Microstructure Formation in a Gas-Atomized Drop of Al-Pb-Sn Immiscible Alloy
文献类型：期刊论文
| 作者 | L. Zhao ; J. Z. Zhao |
| 刊名 | Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
 |
| 出版日期 | 2012 |
| 卷号 | 43A期号:13页码:5019-5028 |
| 关键词 | liquid miscibility gap system phase solidification evolution nucleation growth |
| ISSN号 | 1073-5623 |
| 中文摘要 | Al-Pb-Sn alloy is rapidly solidified by using the high-pressure gas-atomization technique. A model describing the microstructure evolution in an atomized drop is developed. This model takes into account the concurrent actions of the nucleation, diffusional growth, spatial motions of the minority-phase droplets, and the solidification of the matrix liquid. The microstructure formation in the gas-atomized drop is simulated by coupling the thermodynamic and kinetic calculations. The numerical results show a favorable agreement with the experimental results. They demonstrate that under the rapid cooling conditions of gas atomization, the spatial phase separation due to the Marangoni migration of the minority-phase droplets mainly affects the microstructure formation in a small region close to the atomized drop surface. All the minority-phase droplets are nucleated during the liquid-liquid phase decomposition period. For an Al-(5-9) wt pct Pb-3 wt pct Sn alloy, the average radius and number density of the minority-phase particles depend exponentially on the powder diameter. The microstructure formation process is discussed in detail. |
| 原文出处 | |
| 公开日期 | 2013-02-05 |
| 源URL | [http://ir.imr.ac.cn/handle/321006/60484]  |
| 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 | L. Zhao,J. Z. Zhao. Microstructure Formation in a Gas-Atomized Drop of Al-Pb-Sn Immiscible Alloy[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2012,43A(13):5019-5028. |
| APA | L. Zhao,&J. Z. Zhao.(2012).Microstructure Formation in a Gas-Atomized Drop of Al-Pb-Sn Immiscible Alloy.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,43A(13),5019-5028. |
| MLA | L. Zhao,et al."Microstructure Formation in a Gas-Atomized Drop of Al-Pb-Sn Immiscible Alloy".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 43A.13(2012):5019-5028. |
入库方式： OAI收割
来源：金属研究所
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