Effect of Electromagnetic Stirring during Solidification on the Morphological Evolution of Primary Solid Phase of Al Alloy

Abstract:

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In this study, in order to develop the cast product of Al alloy having a globular microstructure by using the elctromagnetic (EM) stirrer, which was specially designed and manufactured to induce a various fluid flow type of melt during solidification, a morphlogy and size of primary solid phase of the solidifying slurry was investigated with respect to EM stirring condition such as an induced magnetic flux density (MFD) and a frequency of input current. The magnetic flux density of EM stirrer was measured by using a gaussmeter and its distribution and magnetic force within Al melt was simulated in ANSYS program. The induced MFD was increased with decreasing a frequency of input current at the same input voltage due to the increased penetrating depth of magnetic field. But, the magnetic force related directly with a stirring strength of melt was increased with the frequency. Both a roundness and size of primary α phase of Al alloy was decreased with increasing a frequency of input current and MFD within the experimental range. Therefore, the primary α phase was refined and globularized at the higher frequency and MFD.

Info:

Periodical:

Solid State Phenomena (Volumes 116-117)

Edited by:

C.G. Kang, S.K. Kim and S.Y. Lee

Pages:

665-668

DOI:

10.4028/www.scientific.net/SSP.116-117.665

Citation:

D. Y. Lee et al., "Effect of Electromagnetic Stirring during Solidification on the Morphological Evolution of Primary Solid Phase of Al Alloy", Solid State Phenomena, Vols. 116-117, pp. 665-668, 2006

Online since:

October 2006

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Price:

$35.00

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