Flow Effects on Mush Coarsening

Abstract:

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Gradient annealing experiments of a near-eutectic AlCu30 alloy with artificial stirring induced by a rotating magnetic field (RMF) of 6 mT were performed. The specific surface area of the primary phase was measured on metallographic sections perpendicular to the sample axis with a fixed amount of fraction solid. The variation of the specific surface area with fluid flow is compared to flow free experiments: the specific surface area varies as the inverse cube root of annealing time if no RMF is applied, but varies as an inverse forth root at 6 mT. The experimental procedure and results are presented in detail and discussed with models of convective coarsening of dendrites.

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Periodical:

Edited by:

A. Roósz, V. Mertinger, P. Barkóczy and Cs. Hoó

Pages:

409-414

DOI:

10.4028/www.scientific.net/MSF.649.409

Citation:

G. Kasperovich et al., "Flow Effects on Mush Coarsening", Materials Science Forum, Vol. 649, pp. 409-414, 2010

Online since:

May 2010

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Price:

$35.00

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