Evaluation of mechanical properties of aluminium alloy (AA 6082) reinforced with Rice husk ash (RHA) and Boron carbide (B4C) hybrid metal matrix composites using stir casting method

• Main Authors: Chakravarthy, M.P., Santha Rao, D.
• Format: Conference Proceeding
• Language: English
• Subjects: Aluminum alloy (AA 6082); Boron Carbide (B4C); Flexural Strength; Hardness; Impact Strength; Metal matrix Composites (MMCs); Rice husk ash (RHA); Stir casting; Tensile Strength
• ISSN: 2214-7853; 2214-7853
• DOI: 10.1016/j.matpr.2022.06.293

•The stir casting is the improved method for uniform dispersion of particles.•The mechanical properties of alloys of strength to hardness are inferior which can be improved by addition of reinforcement in the matrix material in the liquid state.•One of the significant developments in the field of materials to reduce environmental pollution has been the creation of low-cost MMCs reinforced with eco-friendly material. Aluminum alloys are commonly employed in shipbuilding and automotive manufacturing units. The mechanical properties of alloys, such as strength and hardness, can be improved by adding reinforcement to the matrix material. Stir casting is an improved method for uniform dispersion of particles over conventional casting methods. Therefore, an effort is made to fabricate aluminium alloy (AA 6082) composites with different ratios of hybrid reinforcement of Rice Husk Ash (RHA) and Boron Carbide (B4C) reinforcements.The mechanical properties of composites such as tensile strength, hardness, flexural strength, and impact strength were evaluated. The microstructural properties of composites were evaluated using a scanning electron microscope to determine the dispersion of particles in the matrix material. It is found that tensile strength, hardness were improved by 20% as well as the uniform distribution of reinforcement particles in composites.