Comparison between Simulation and Experimental Results of the Effect of RMF on Directional Solidification of Al-7wt.%Si Alloy

Abstract:

A numerical investigation of directional solidification of Al-7wt.%Si alloy stirred by a rotating magnetic field is compared with experimental results. Experimental study of such process has revealed periodical macrosegregation in axial direction of the samples in the shape of a “Christmas tree”. Similar macrosegregation pattern is obtained in simulations for the two values of magnetic field. Numerical simulations have shown also that formation of the periodical structure depends not only on the external conditions but on the permeability of the mushy zone.

• Periodical: Materials Science Forum (Volume 649)
• Pages: 269-274
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.649.269
• Online since: May 2010
• Authors: Olga Budenkova, Anne Noeppel, Jenő Kovács, Arnold Rónaföldi, András Roósz, Anne Marie Bianchi, Florin Baltaretu, Mabel Medina, Yves Fautrelle
• Keywords: Christmas Tree-Like Macrosegregation, Multiphase Model, Rotating Magnetic Field, Solidification

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