Analysis and Characterization of TIO2 Nanoparticle Effect on Aluminum Matrix Nanocomposites by Stir Casting

Abstract

The objective of this study was to use stir casting to create aluminum matrix nanocomposites with a uniform dispersion of TiO₂ nanoparticles to evaluate their effect on the performance of aluminum-based products. Microstructural analysis significantly reduced the grain size, with an average drop of 18.2%. This suggests that the TiO2 nanoparticles affect the mineral matrix, which improves the mechanical properties. With the incorporation of TiO2 particles, the results showed improvements in stiffness (6.97%), nominal stress (27.92%), actual failure stress (25.6%), and ultimate stress (26.1%). Outperforming commercially pure aluminum, the mechanical properties of the resulting nanocomposites were significantly improved by adding TiO₂ nanoparticles into the aluminum matrix. Microstructural and X-ray diffraction (XRD) studies confirmed the beneficial effects of the addition of nanoparticles.