Abstract
The role of natural and forced convections during solidification of pure tin in an annular crucible was studied. The forced convection was generated by electromagnetic stirring. Maps of electromagnetic body forces and velocity fields were obtained for various stirring intensities and various positions of the solidification front. Temperature measurements made it possible to follow the evolution of the solidification front with time. These experiments were carried out from various degrees of superheat both in the absence and presence of electromagnetic stirring. A discussion is presented relating the metallurgical findings (macrostructure) to the heat and fluid flow measurements.
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