Effect of electromagnetic field on the behavior and distribution of the particles in front of metallic solidification interface
SUN Qiuxia; ZHONG Yunbo; REN Zhongming; LOU Lei; DENG Kang; XU Kuangdi
Shanghai Enhanced Laboratory of Modern Metallurgy & Materials Processing; Shanghai University; Shanghai 200072
Cite this article:
SUN Qiuxia; ZHONG Yunbo; REN Zhongming; LOU Lei; DENG Kang; XU Kuangdi. Effect of electromagnetic field on the behavior and distribution of the particles in front of metallic solidification interface. Acta Metall Sin, 2005, 41(3): 321-325 .
Abstract The quantitative relationship between the nonmetallic particle's
redistribution in metal and electromagnetic force (EMF)
was developed during the process of unidirectional
solidification in electromagnetic
field. It was pointed theoretically
that controlling the cycle of the
electromagnetic field and the solidified parameters
could produce a new composite material
in which the content of the particles is a function of the
unidistance from the growing interface. Experimental
results show that by applying periodical electromagnetic
force to the unidirectionally solidified hypereutectic
Al-19%Si alloy, the primary silicon--rich particles distributed
layer by layer, and the surface hardness fluctuated periodically.
Through adjusting the frequency of the
electromagnetic force and the rate of
the solidifying interface, the width
between the two adjacent layers could be
changed freely.
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