Abstract
The effect of shape of stirring blade, the viscosity and ultrasonic vibration on the homogeneity of microstructure was investigated by visualized modeling of stir casting process using water and glycerin. Then aluminu m and magnesium ally matrix composites was fabricated under the condition obtained by visualized modeling. The paddle type stir blade and the utilizing of ultrasonic vibration have good flow patterns for homogeneous distribution of the reinforcement in the composite bullet.