Study on the Solidification Structures of Al-Fe-Si Alloy under DC and AC Magnetic Fields

Chun Yan Ban; Xu Zhang; Peng Qian; Yi Han; Jian Zhong Cui

doi:10.4028/www.scientific.net/AMR.189-193.4477

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Study on the Solidification Structures of Al-Fe-Si Alloy under DC and AC Magnetic Fields
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HomeAdvanced Materials ResearchAdvanced Materials Research Vols. 189-193Study on the Solidification Structures of Al-Fe-Si...

Study on the Solidification Structures of Al-Fe-Si Alloy under DC and AC Magnetic Fields

Abstract:

The effects of DC and AC magnetic field on the phase composition, morphology and distribution of the ternary Al-Fe-Si alloy were investigated. The solidification structures of the alloy solidified with and without the application of magnetic fields were confirmed by DSC and structural measurements. The results showed that, in this Al-Fe-Si alloy the fine needle-like Al3Fe phase dominated the microstructure at the grain boundaries with the minor amount of Chinese script-like α-AlFeSi. Distribution of Al₃Fe phase was almost homogeneous in the volume of the sample when alloy was solidified in the conventional condition. When the DC magnetic field was imposed, distribution of Al₃Fe phase was more homogeneous. However, the Al₃Fe and α-AlFeSi phases were accumulated towards the center of the sample with the application of the AC magnetic field. This is due to the difference of Lorentz force between Al matrix and iron-containing intermetallics. Furthermore, the amount of Chinese script-like α-AlFeSi was increased remarkably under AC magnetic field.

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Periodical:

Advanced Materials Research (Volumes 189-193)

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4477-4482

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.189-193.4477

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Online since:

February 2011

Authors:

Chun Yan Ban, Xu Zhang, Peng Qian, Yi Han, Jian Zhong Cui

Keywords:

Al-Fe-Si Alloy, Distribution, Magnetic Field, Morpholoy, Solidification

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