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| Control of solidified structures of Al--Si hypereutectic alloy by using intense magnetic fields |
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| 东北大学 |
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Cite this article:
;. Control of solidified structures of Al--Si hypereutectic alloy by using intense magnetic fields. Chin J Mater Res, 2004, 18(6): 568-576.
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Abstract The changes of the macro- and micro- solidified structures of Al--15.7\%Si
hypereutectic alloy were examined under various experimental conditions,
and the influences of static and gradient magnetic fields with different
amplitude and
direction on the structures were investigated in details. It is found that
not only the distribution of the primary crystal silicon but the structures
and density of silicon framework of eutectic are different because of different
magnetic parameters. The changes of the primary crystals distribution is due to
the action of the Lorentz and magnetization forces caused by intense magnetic
fields on the migratory behaviors of Si particles in the alloy matrix; and the
forces can also change the convection phenomena during solidification to affect
the solidified structures of alloy. The results indicate that it is possible to
control the behaviors of reinforced particles in the metal matrix by using
intense magnetic fields in the solidification process of metal matrix composites.
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Received: 29 December 2004
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