Investigation On Tensile Properties Of Aluminum 7075 - Silica Particles -Boron Fiber- Reinforced Hybrid Metal Matrix Composites

Abstract

Hybrid metal matrix composites (MMCs), particularly those using an Aluminum 7075 (Al7075) base combined with silica particles and boron fibers, have emerged as a focal point in engineering for their superior strength-to-weight ratio. This study examines a composite of Al7075 reinforced with varying amounts of silica particles (0%, 2%, 4%, 6%) and boron fibers (1%, 3%, 5%, 7%). The research aims to discern the impact of these reinforcements on the composite's tensile properties. Employing the stir casting technique, these reinforcements were melted into the Al7075 matrix. The composites underwent tensile testing to gauge their mechanical performance, with a tensometer measuring tensile strength. The findings indicate that the inclusion of silica and boron fibers enhances tensile strength, with the greatest increase of 43.5% rise in tensile stress observed in the sample with 6% silica and 7% boron fiber. Variance analysis reveals that silica contributes 85.51% to the strength, boron fiber contributes 12.70%, and there is an error margin of 1.49%. Furthermore, a comparison of experimental, regression, and Artificial Neural Network (ANN) predicted values confirms consistency within an error margin of 5.86%.