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Research Article
Determination of wear rate and coefficient of friction of Al6262 reinforced with different weight percentage of WC/MoS2 under dry sliding condition
Kadapa Hemadri1, Ajith Arul Daniel S1, Vijayendra Kukanur2, Madeva Nagaral3
1Dept. of Mechanical Eng., Vels Institute of Science, Technology & Advanced Studies, Tamil Nadu India
2Dept. of Mechanical Eng., H.K.E.Society’s Sir.M.Visvesvaraya College of Engineering, Karnataka India
3Aircraft Research and Design Centre, HAL, Bengaluru, Karnataka, India
Keywords
Abstract
Tungsten carbide;
Molybdenum di Sulphide;
Wear;
Taguchi;
SEM analysis
A tribological investigation was undertaken on hybrid metal matrix composites based on Aluminum alloy 6262, incorporating varying weight percentages of Tungsten Carbide (WC) and Molybdenum disulfide (MoS2) under dry sliding conditions. Specifically, Tungsten Carbide was incorporated at 3%, 6%, and 9%, while Molybdenum disulphide was introduced at 2%, 4%, and 6%. The fabrication of these hybrid composites was accomplished using the stir casting technique. The experimental design followed an L27 orthogonal array, and Taguchi optimization was employed to identify the optimal combination of input parameters. The orthogonal array, signal-to-noise ratio and analysis of variance were employed to study the optimal testing parameters on developed composites. The optimal formulation, resulting in the minimum wear rate and coefficient of friction, was determined to be 9% WC, 6% MoS2, a load of 10N, a sliding velocity of 1 m/s, and a sliding distance of 400 m. Characterization was carried out for Al6262/WC/MoS2 hybrid composite by using scanning electron microscopy (SEM).
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