Comparative Analysis of Mechanical Properties of AL6061/E-Glass Fibre Composites before and After Severe Plastic Deformation (ECAP)

Abstract

This study focuses on characterizing and examining the mechanical properties of Al6061 Metal Matrix Composites (MMCs) reinforced with E-glass fibres before and after undergoing Equal Channel Angular Pressing (ECAP). Al6061 alloy is renowned for its exceptional mechanical properties and resistance to corrosion, making it highly suitable for various industrial applications. The addition of E-glass fibres enhances the composite's strength and provides the flexibility to customize material properties for specific uses. The fabrication process involved stir casting to ensure a well-dispersed and uniform material. ECAP was employed to induce grain refinement and investigate the composites' mechanical behaviour. Microstructural analysis was conducted to study the distribution of reinforcement particles and matrix phases. Density and porosity measurements were acquired using Archimedes' principle, revealing trends in the compactness of the composites. Rockwell hardness tests demonstrated an increase in hardness after ECAP, attributable to improved load-bearing capabilities. Tensile tests showed higher ultimate tensile strength (UTS) and reduced percentage elongation (PE) with an increase in E-glass fibre content and after ECAP. These findings offer valuable insights into the mechanical behaviour of Al6061 MMCs reinforced with E-glass fibres, showcasing the potential for tailoring properties to fulfil specific industrial requirements.