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Effects of Superposed Field on Solidification Microstructure of Al-7wt%Si Alloy

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Abstract:

In this paper, the effect of superposition of rotating electromagnetic field and triangular pulse electric field on the microstructure of the cast Al-7wt％Si hypoeutectic alloy was investigated. The experimental results showed that solidification microstructure of Al-7wt％Si hypoeutectic alloy could be obviously improved from dendrites to nearly equiaxed grain with increasing the voltage of rotating electromagnetic field and α－Al dendrites were refined by superposed field. Moreover, refinement effects were further improved with increasing intensity of the superposed field.

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Periodical:

Advanced Materials Research (Volumes 189-193)

Pages:

3999-4002

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.189-193.3999

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Online since:

February 2011

Authors:

Zhi Hua Wang, Ming Zhu, Guang Ji Xu

Keywords:

Grain Refinement, Solidification Microstructure, Superposed Field

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© 2011 Trans Tech Publications Ltd. All Rights Reserved

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