Development and Characterization of Al₂O₃ and SiC Reinforced Al-Cu Metal Matrix Hybrid Composites

Abstract

The present work deals with the synthesis and characterization of Al-Cu-SiC-Al2O3 hybrid metal matrix composite with varying percentage of Al2O3. The synthesized hybrid composite samples were conventionally sintered at two different sintering temperatures i.e. 500°C and 600°C for 1 hr each. SEM investigation predicts the uniform distribution of reinforcing particles. The SEM and XRD results of the sintered composites revealed the presence of a new intermetallic alloy CuAl2 phase along with Al and SiC phases. It is observed that the density and hardness of Al-Cu-SiC-Al2O3 hybrid composite increases with increase in wt % of Al2O3 and sintering temperature.