Abstract
A Fortran 90 computer program was build to study the heat transfer in two
dimensions (2-D) using explicit finite difference method for (Al-4.5%Mg) alloy.
This alloy was produced by horizontal centrifugal casting, the effect of rotational
speed on cooling rate and solidification thickness is investigated numerically,
using the experimental data. Microstructure and hardness of the produced casting
was investigated for different mold rotational speed, and different preheated mold
temperatures (70, 200 ) o C.
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