Parametric optimization of wear parameters on wear rate and coefficient of friction for hybrid (A356 +TiB2+ ZrO2) metal matrix composites
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In this study, the TiB2 & ZrO2 incorporated A356 based hybrid composites were fabricated via stir casting method and alsothe wear parameters such as wear rate (WR) and coefficient of friction (COF) were optimized using Taguchi-Grey RelationalApproach (GRA). It was found that 10 N of load, 2 m/s of Sliding velocity, 1500 m of sliding distance and reinforcement of0.5%TiB2+ 2.5%ZrO2 nano particle as the optimal conditions to acquire the minimum WR and COF. The uniform dispersionof nano particles in the matrix alloy was found out with microscopic examination. Analysis of variance results revealed loadand incorporation of nano particles as the factors that have dominant influence on WR and COF respectively in that order. Significant improvement in wear resistance rate was obtained with the addition of TiB2 and the COF prominently got reducedwith the reinforcement of increased wt% of ZrO2.
Abstract
In this study, the TiB2 & ZrO2 incorporated A356 based hybrid composites were fabricated via stir casting method and alsothe wear parameters such as wear rate (WR) and coefficient of friction (COF) were optimized using Taguchi-Grey RelationalApproach (GRA). It was found that 10 N of load, 2 m/s of Sliding velocity, 1500 m of sliding distance and reinforcement of0.5%TiB2+ 2.5%ZrO2 nano particle as the optimal conditions to acquire the minimum WR and COF. The uniform dispersionof nano particles in the matrix alloy was found out with microscopic examination. Analysis of variance results revealed loadand incorporation of nano particles as the factors that have dominant influence on WR and COF respectively in that order. Significant improvement in wear resistance rate was obtained with the addition of TiB2 and the COF prominently got reducedwith the reinforcement of increased wt% of ZrO2.
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