Microstructure Formation in a Directionally Solidified Immiscible Alloy
文献类型：期刊论文
| 作者 | H. L. Li ; J. Z. Zhao ; Q. X. Zhang ; J. He |
| 刊名 | Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science
 |
| 出版日期 | 2008 |
| 卷号 | 39A期号:13页码:3308-3316 |
| 关键词 | liquid miscibility gap zn-pb alloys hypermonotectic alloys al-in evolution microgravity nucleation droplets kinetics |
| ISSN号 | 1073-5623 |
| 中文摘要 | Directional solidification experiments were carried out with an Al-Pb alloy. A model was developed to analyze the microstructure evolution in a directionally solidified immiscible alloy by taking into account the common actions of the nucleation and the diffusional growth/shrinkage of the minority phase droplets (MPDs), the spatial phase segregation, and the convections of the melt. The microstructure formation under the practical situations was calculated. The numerical results agree with the experimental ones well. They demonstrate that the convective flow against the solidification direction causes an increase in the nucleation rate, while the convective flow along the solidification direction causes a decrease in the nucleation rate. The convective flow leads to a more nonuniform distribution of the MPDs in the melt. It causes an increase in the size of the largest MPDs and is against the obtaining of the immiscible alloys with a well-dispersed microstructure. |
| 原文出处 | |
| 公开日期 | 2012-04-13 |
| 源URL | [http://210.72.142.130/handle/321006/32868]  |
| 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 | H. L. Li,J. Z. Zhao,Q. X. Zhang,et al. Microstructure Formation in a Directionally Solidified Immiscible Alloy[J]. Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,2008,39A(13):3308-3316. |
| APA | H. L. Li,J. Z. Zhao,Q. X. Zhang,&J. He.(2008).Microstructure Formation in a Directionally Solidified Immiscible Alloy.Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science,39A(13),3308-3316. |
| MLA | H. L. Li,et al."Microstructure Formation in a Directionally Solidified Immiscible Alloy".Metallurgical and Materials Transactions a-Physical Metallurgy and Materials Science 39A.13(2008):3308-3316. |
入库方式： OAI收割
来源：金属研究所
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