Comparison of Hardness and Drilling of Alumina Reinforced AMMC and Silicon Reinforced AMMC

Author(s): M. Samuel, M. Arun Prasath, R. Pavendhan, D. Jayanathan, T. Vasanthan

Abstract: Aluminum alloy 7075 finds application in the wide area ranging from automobile to aeronautical fields owing to its higher corrosion resistance and light weight nature. But the mechanical properties like hardness and tensile properties needs to be improved, which may be achieved using some reinforcement particles. In the present work two Aluminum Metal Matrix Composites (AMMC) were fabricated through stir casting technique using different reinforcement particles (Alumina powder and silicon metal powder) in varying compositions of 5%, 10% and 15% by weight. These Particles reinforced AMMC were tested for hardness using Vickers hardness testing method. Similarly, the forces required for drilling on these AMMCs were also determined.