Abstract
Zn-Al-based alloys are considered to be important engineering materials because of their excellent combination of good castability, mechanical properties, and super plasticity. Efforts have been focused to produce high quality casting parts at low price and in the shortest possible time. In the present work, numerical experiments were carried out to assess the influence of process parameters on solidification behavior of ZA-8 alloy. Investigation shows that thermo-physical properties of mold, volumetric heat capacity of casting, casting super heat and mold preheat have significant effects on cooling rate of casting. Thus a proper control over the cooling rate during solidification of ZA8 alloy by judicious selection of process parameter would yield better metallurgical and mechanical properties.
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