Properties of Al/Al2O3-TiO2 composites prepared by powder metallurgy processing

In this paper, aluminum metal matrix composite (AMC s ) containing Al 2 O 3 -TiO 2 composite powder in different ratios (5, 10, 15, and 20 wt.%) as a reinforcement material was produced using the powder metallurgy method. This paper aims to research the effect of the alumina-titanium oxide powder ratio on Al/Al 2 O 3 -TiO 2 composite properties. An experimental study has been carried out on density, hardness, tensile strength, phase, and microstructure characterization of aluminum metal matrix composites. The findings of the experimental in-vestigation reveal that the AMC s with 20 wt.% Al 2 O 3 -TiO 2 exhibited gradually increased mechanical properties, i.e., Vickers hardness of 56 HV and the tensile strength of 150 MPa. It has been concluded that the density of composites improved with the addition of Al 2 O 3 -TiO 2 reinforcement. Microstructural observation indicates that the distribution of Al 2 O 3 -TiO 2 particles is usually near-uniform and homogeneous in the aluminum matrix.