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Research Paper | Mechanical Engineering | India | Volume 6 Issue 10, October 2017 | Popularity: 4.1 / 10
A Comprehensive Analysis on Fatigue Behavior of Graphite - Reinforced Aluminium 2024 Composites
Divya S. N. , Anand A. , Raviprakash T N
Abstract: Aluminium components play a crucial role in aerospace, naval, sports, and structural applications due to their lightweight nature, excellent corrosion resistance, and high strength - to - weight ratio. However, pure Aluminium has inherent limitations, such as a high wear rate and low hardness, which restrict its use in high - performance applications. Carbon, known for its exceptional strength and hardness due to tetra - valent bonding, exists in various allotropes, including Diamond and Graphite. Among these, Graphene?a single - layer allotrope of carbon derived from Graphite?exhibits outstanding mechanical properties such as high tensile strength, superior wear resistance, and a low coefficient of friction. Reinforcing Aluminium 6061 with Graphene significantly enhances its mechanical and tribological properties, making it a promising material for advanced engineering applications. This study focuses on the fabrication and wear analysis of Aluminium 6061 - Graphene metal matrix composites (MMC) using the stir casting technique. Graphene is incorporated as a reinforcement in weight percentages of 0%, 0.5%, and 1%. The casted composites are further subjected to heat treatment, and test specimens are prepared following ASTM standards for wear analysis. The wear behavior of the composites is studied 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 experiments are conducted at a fixed track length of 2000 meters, a sliding velocity of 1.256 m/sec, and varying normal loads of 20N, 30N, and 40N. The results demonstrate that Graphene reinforcement significantly enhances the wear resistance of Aluminium 6061 by reducing material loss, frictional force, and wear rate. The coefficient of friction is also improved, making the composite more durable under high - stress conditions. The mechanical properties of the composite are influenced by both the Graphene content and the applied load, showing superior performance compared to as - cast Aluminium 6061. This study underscores the effectiveness of Graphene as a reinforcing agent in Aluminium - based MMCs, paving the way for the development of high - strength, wear - resistant materials for aerospace, automotive, and other industrial applications.
Keywords: Aluminium Metal Matrix Composites, Wear Resistance, Graphene Reinforcement, Tribological Properties, Stir Casting
Edition: Volume 6 Issue 10, October 2017
Pages: 2180 - 2184
DOI: https://www.doi.org/10.21275/SR17106092342
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