Effect of TiB2 on Dry Sliding Wear Behaviour of Aluminium-Based Metal Matrix Composites Fabricated via Powder Metallurgy

The influence of TiB2 particles on wear characteristics of AA7175 composite was achieved by using powder metallurgy techniques to fabricate the composite material. The distribution of TiB2 particles on AA7175 is analysed using a Scanning Electron Microscope (SEM). An Analysis of Variance (ANOVA) is used to examine the dry sliding wear behaviour of a composite in order to determine an optimal performance parameter. The influence of variables such as the rate at which two surfaces slide against each other, the amount of force applied, the distance across which sliding occurs, and the proportion of reinforcement present. This study is centred around the utilisation of a reduced matrix to determine the optimal parameters for dry sliding wear characteristics. The composite exhibited a favourable sintering reaction, resulting in the attainment of maximal density. The SEM micrographs revealed an effective dispersion of reinforcing particles throughout the composites. The ANOVA analysis provided the optimal parameter settings for the wear process. The increase in load has a substantial impact on the worn surface, as shown by the influence of frictional heat on the intermediate zone and the observation of scale development in the SEM images.