Abstract
The influence of mold size on the solidification structure was examined. The cylindrical mold made of alumina filled with Al-4wt%Cu alloy was subjected to the steady temperature gradient to obtain the stationary solid-liquid interface, and then the furnace was cooled. At required elapsed times, the mold was quenched in water. As a result, the curvature of the solid-liquid interface was decreased with decreasing diameter of the mold. And, it was found that the solidification started 20 to 30 second after cooling of the furnace.
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