Tribological Properties Evaluation Of Hybrid Composites (Al6061-Tungsten Carbide-Fly Ash)

Abstract

Particulate-reinforced Metal Matrix Composites (MMCs) are highly attractive due to their excellent specific properties and compatibility with conventional metalworking techniques. These composites are widely used in the automotive and aerospace sectors and have well-established applications in the space industry. The improved mechanical and tribological properties of MMCs make them ideal for lightweight components. Hybrid Metal Matrix Composites (HMMCs) are a specialized category of MMCs that utilize multiple reinforcement materials to achieve enhanced properties, particularly in tribology. This study focuses on the fabrication and evaluation of the tribological properties of Al6061 alloy reinforced with tungsten carbide and fly ash particles. The composites are prepared using the liquid metallurgy (stir casting) technique with varying reinforcement percentages. The results demonstrate significant improvement in tribological properties, including wear resistance, due to the synergistic effects of the dual reinforcements.