Influence of Heat Treatment on Mechanical Characteristics of Al7075/Al2O3/TiC Hybrid Metal Matrix Composite

The present paper deals with the study and characterization of the physical and mechanical behaviors of Al-7075/Al 2 O 3 / TiC hybrid metal matrix composite (HMMC) materials. The assimilation of dual particles like self-lubricated ceramic particles (Al 2 O 3 ) along with hard particles (TiC) in the Al-7075 matrix is done using liquid stir casting method. The hybrid composite is produced with varying weight percentages of (8, 6, 4, 2, 0) Al2O3 and TiC (0, 2, 4, 6, 8) particulates. The produced Al HMMC materials are subjected to heat treatment (T6). The behavior of properties like density, hardness, impact and tensile strengths are analyzed based on experimentation. The obtained properties of cast Al-7075 HMMC materials are compared with heat treated Al-7075 composite materials. The dispersion of TiC hard particles in ductile Al-7075 matrix, predominates Al 2 O 3 in improving mechanical properties because of its superior properties.