| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Effect Mechanism of a Direct Current on the Solidification of Immiscible Alloys |
| JIANG Hong-Xiang, ZHAO Jiu-Zhou** |
| Institute of Metal Research, Chinese Academy of Sciences, Shenyang 110016 |
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| Cite this article: |
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Abstract Continuous solidification experiments are carried out with Al-Pb alloys under the effect of a direct current. The microstructure evolution in the samples is calculated. The numerical results obtained indicate that a direct current has great effects on the solidification of immiscible alloys. It mainly affects the microstructure evolution during a liquid-liquid decomposition by changing the spatial motions of the minority phase droplets and the temperature field in front of the solidification interface. A sample with either a well dispersed or a core/shell microstructure can be obtained by solidifying Al-Pb alloys under the effect of properly selected direct currents.
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Received: 21 February 2012
Published: 31 July 2012
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| PACS: |
81.05.Bx
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(Metals, semimetals, and alloys)
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81.30.Fb
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(Solidification)
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81.30.-t
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(Phase diagrams and microstructures developed by solidification and solid-solid phase transformations)
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64.60.Q-
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(Nucleation)
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