Influence of SiC Reinforcement on the Hardness and Tensile Properties of Metal Matrix Composites

Abstract

This research paper presents an experimental investigation into the mechanical properties and microstructural characteristics of several aluminum-based metal matrix composites reinforced with graphite, silicon carbide (SiC), and hybrid particles. Detailed tensile and hardness tests were conducted on Al6061 and hybrid composite samples to evaluate the effect of reinforcement type and quantity on material strength and durability. Microstructural analyses using optical microscopy revealed the distribution and interaction between the aluminum matrix and reinforcing particles. Results show that the addition of SiC and graphite particles significantly enhances hardness and tensile strength compared to the base Al6061 alloy. Hybrid composites exhibited improved mechanical performance owing to the synergistic effects of combined reinforcements. The study also highlights the correlation between microstructural features such as precipitate size and distribution, and mechanical properties. These findings underscore the potential of metal matrix composites for engineering applications requiring lightweight yet high-strength materials. his abstract summarizes the main points and key findings from the reports on tensile, hardness, and microstructure tests of metal matrix composites provided.