Microstructural and Mechanical Characterization of Al2031–TiC Composites

Abstract: Aluminium matrix composites (AMCs) are extensively used in aerospace, automobile, and structural engineering applications because of their high strength-to-weight ratio, excellent wear resistance, and superior mechanical performance. In the present investigation, Al2031 alloy reinforced with Titanium Carbide (TiC) particles was fabricated using the stir casting method to study the influence of reinforcement on microstructural and mechanical properties. Different weight percentages of TiC particles were incorporated into the Al2031 matrix to improve hardness, tensile strength, and wear resistance. The prepared composites were characterized using optical microscopy and scanning electron microscopy to evaluate particle distribution and interfacial bonding. Mechanical characterization was carried out through hardness and tensile testing. The results revealed that the addition of TiC particles significantly enhanced the mechanical properties of the composite due to effective load transfer and grain refinement mechanisms. Uniform distribution of reinforcement particles and reduced porosity contributed to improved performance. The developed Al2031–TiC composites exhibited promising characteristics for lightweight engineering applications.

Keywords: Aluminium Matrix Composite, Al2031 Alloy, Titanium Carbide, Stir Casting, Mechanical haracterization, Microstructure.