Abstract
In this paper, aluminum metal matrix composite (AMC_s) containing Al₂O₃-TiO₂ 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/Al₂O₃-TiO₂ 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 investigation reveal that the AMC_s with 20 wt.% Al₂O₃-TiO₂ 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 Al₂O₃-TiO₂ reinforcement. Microstructural observation indicates that the distribution of Al₂O₃-TiO₂ particles is usually near-uniform and homogeneous in the aluminum matrix.

Key words
aluminum-based composite, powder metallurgy, Al/Al₂O₃-TiO₂, mechanical behavior

Full text (1195 KB)