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Research Paper | Mechanical Engineering | India | Volume 5 Issue 7, July 2016 | Popularity: 3.3 / 10
Experimental Investigation on Enhancing Wear Resistance of Aluminium and the Impact of Graphene Reinforcement on Metal Matrix Composites
Divya S N
Abstract: Aluminium components have gained significant importance in aerospace, naval, sports, and structural applications due to their lightweight, corrosion resistance, and high strength - to - weight ratio. However, pure Aluminium has limitations, such as high wear rate and low hardness, restricting its use in specialized applications. Carbon, known for its exceptional strength and hardness due to its tetra - valent bonding, exists in multiple allotropes, including Diamond and Graphite. Graphene, a single - layer allotrope of carbon derived from Graphite, exhibits outstanding mechanical properties, including high tensile strength, superior wear resistance, and a low coefficient of friction. Reinforcing Aluminium 6061 with Graphene enhances its properties, making it more suitable for advanced applications. This study focuses on fabricating Aluminium 6061 - Graphene metal matrix composites (MMC) using the stir casting technique, incorporating Graphene reinforcement in weight percentages of 0%, 0.5%, and 1%. The casted composites undergo heat treatment, and specimens are prepared following ASTM standards for wear testing. Wear behavior is analyzed under dry friction conditions using an EN - 32 steel rotating disc with a surface roughness of 0.394?m and hardness of 62 HRC. The experiment is conducted at a fixed track length of 2000 meters, a sliding velocity of 1.256 m/sec, and normal loads of 20N, 30N, and 40N. The results indicate that Graphene reinforcement significantly enhances the wear resistance of Aluminium 6061, reducing frictional force and improving the coefficient of friction. The mechanical properties of the composite vary based on the Graphene content and applied load, demonstrating an improvement over as - cast specimens. This study highlights the effectiveness of Graphene as a reinforcing material for Aluminium - based MMCs, offering improved wear resistance and mechanical performance for specialized applications. The findings contribute to the development of advanced materials for industries requiring high - strength, wear - resistant components.
Keywords: Aluminium Metal Matrix Composites, Wear, wear strength, Graphene Hydroxyl
Edition: Volume 5 Issue 7, July 2016
Pages: 2258 - 2262
DOI: https://www.doi.org/10.21275/SR16074092127
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