Abstract
Experimental study was carried out on semi-solid diecasting process using mixture of elemental aluminum and silicon powders. The mixture of powders was heated to the semi-solid state temperature of 30% volume fraction of solid phase and then it was mechanically stirred. After stirring, it was forced into preheated metal die-cavity. The results are as follows.The fludity of the stirred slurry and the surface condition of products are improved by the stirring. In the optical micrografic structure of the products, α phase is spheroidized and eutictic structure is refined by the stirring of srurry. Tensile strength, elongation and hardness of the products prepared from the stirred slurry are higher than those of the products prepared from unstirred slurry.
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