Solidification Behavior of Immiscible Alloys under the Effect of a Direct Current

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	Solidification Behavior of Immiscible Alloys under the Effect of a Direct Current
	H. X. Jiang; J. Z. Zhao; J. He
	2014
发表期刊	Journal of Materials Science & Technology
ISSN	1005-0302
卷号	30 期号:10 页码:1027-1035
摘要	Directional solidification experiments were carried out with Al-Pb alloys under the effect of a direct current (DC). The experimental results show that the DC causes a migration of the minority phase droplets (MPDs) from the middle part to the surface region of the sample. Samples with either a finely dispersed microstructure or a shell/core structure were obtained by solidifying the alloy under the effect of the properly selected DC densities. A model was developed to describe the microstructure evolution in an immiscible alloy directionally solidified under the effect of the DC. The microstructure formation in the Al-Pb alloys was calculated. The numerical results are in favorable agreement with the experimental ones. They demonstrate that the DC affects the microstructure formation mainly through changing the spatial motions of the MPDs and the temperature field of the melt in front of the solid/liquid interface. The formation mechanisms of the finely dispersed microstructure as well as the shell/core structure were sufficiently clarified.
部门归属	[jiang, hongxiang ; zhao, jiuzhou ; he, jie] chinese acad sci, inst met res, shenyang 110016, peoples r china. ; zhao, jz (reprint author), chinese acad sci, inst met res, shenyang 110016, peoples r china. ; jzzhao@imr.ac.cn
关键词	Rapid Directional Solidification Direct Current Finely Dispersed Microstructure Shell/core Structure Current-carrying Conductors Microstructure Evolution Monotectic Alloys Miscibility Gap Al-bi Interfacial-tension Electric-current Pb Alloys Nucleation Sn
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语种	英语
文献类型	期刊论文
条目标识符	http://ir.imr.ac.cn/handle/321006/73251
专题	中国科学院金属研究所
推荐引用方式 GB/T 7714	H. X. Jiang,J. Z. Zhao,J. He. Solidification Behavior of Immiscible Alloys under the Effect of a Direct Current[J]. Journal of Materials Science & Technology,2014,30(10):1027-1035.
APA	H. X. Jiang,J. Z. Zhao,&J. He.(2014).Solidification Behavior of Immiscible Alloys under the Effect of a Direct Current.Journal of Materials Science & Technology,30(10),1027-1035.
MLA	H. X. Jiang,et al."Solidification Behavior of Immiscible Alloys under the Effect of a Direct Current".Journal of Materials Science & Technology 30.10(2014):1027-1035.