Optimization of Processing Parameters of Primary Phase Particle Size of Cooling Slope Process for Semi-solid Casting of ADC 12 Al Alloy

The present work presents the results of experimental investigation of semi-solid preparation billet of ADC12 Al alloy using a cooling slope. The experiments have been carried out following central composite design. Three-key process variables at five different levels (pouring temperature, slope angle, and length of travel of the melt) have been considered for the present experimentation. Regression analysis and analysis of variance (ANOVA) have also been performed to develop a mathematical model for particle size of evolution of primary α-Al phase using response surface methodology. Finally, the best processing condition has been identified for optimum particle size (48.27) as slope angle of 65°, pouring temperature of 580 ℃, and 300 mm length of travel of the melt. The effect of pouring temperature, slope angle, and length of travel of the melt were identified to find the most important effects.