Aluminum composites are preferred in many kinds of applications such as aviation, space, automotive, and marine, owing to their outstanding properties, high strength, and corrosion resistance. The main objective of the current study is to evaluate the mechanical properties of aluminum alloy 6061/titanium dioxide (micro-TiO₂) microcomposite synthesized using the stir casting method. The effects of changes in stir casting parameters, such as stirring speed and tiring durations, were studied. Al6061 matrix was reinforced with micro-TiO₂ particles with weight fractions of 1, 2, 3, 4, and 5 wt.%. Microstructural and chemical analyses were conducted to explore microstructural transformation resulting from the presence of the TiO₂ microparticles. The mechanical characteristics were evaluated, and the results showed a considerable enhancement in the mechanical strength and hardness resulting from the incorporation of micro-TiO₂ into Al606. The additions of 2 wt.% and 5 wt.% of micro-TiO₂ recorded the highest ultimate tensile strength and hardness, respectively.

Aluminum, as a base metal in metal matrix composites (MMCs), has favor over other traditional materials in the scopes of aviation, space, automotive and marine applications because of their improved properties such as specific strength, good corrosion resistance. Wear behavior, as a major inferiority for Al6061, was tried to be improved by adding Titanium Dioxide (TiO2) nanoparticles constituting a wear resistant composite that complies with tribological uses such as brakes. Composites reinforced with weight percentages 1:5 wt% of TiO2 with step of 1% were prepared using stir casting technique. The addition of the TiO2 deeply affected the wear performance of Al6061 alloy where the more the percentage of the reinforcement was added, the more the coefficient of friction was elevated where reinforced composite with 5 wt% of reinforcement particles showed highest coefficient of friction. In the other hand, the reinforced composite with 5 wt% TiO2 had the biggest wear even, in some cases, more than the unreinforced alloy, while 2 wt% TiO2-composite showed the lowest wear over friction process.