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Effect of SiC Content on Mechanical and Tribological Properties of Al2024-SiC Composites

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Abstract

Aluminium matrix composites are scientifically engineered materials possessing higher potential in automotive, aerospace and defence applications. Therefore this study focuses on the fabrication of aluminium matrix composites reinforced with micro SiC particulates by stir casting process and investigating the effect of SiC content on mechanical properties as well as wear behaviour of the prepared composites. Different weight percentages (wt.%) of silicon carbide particulates (0, 3, 6 and 9%) were used. Stirring speed, time and other parameters were kept constant during the casting process. Microstructural characterization, tensile, hardness and wear tests were carried out of the casted samples. XRD analysis depicted the existence of SiC particulates in the prepared composites. Microstructural analysis confirms even distribution of reinforcement particulates. The experimental results revealed that, strength and hardness of the prepared composites improved with SiC addition. Wear resistance of SiC reinforced composites were also higher than that of the matrix alloy. The wear mechanism of matrix alloy was adhesive, whereas the wear mechanism changed to abrasive in case of SiC reinforced composites. The prepared composites exhibit augmented mechanical and tribological properties and can be used as a promising material in applications such as gears, drive shafts, brake drums and bearings.

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Correspondence to Dipankar Dey.

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Dey, D., Bhowmik, A. & Biswas, A. Effect of SiC Content on Mechanical and Tribological Properties of Al2024-SiC Composites. Silicon 14, 1–11 (2022). https://doi.org/10.1007/s12633-020-00757-y

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  • DOI: https://doi.org/10.1007/s12633-020-00757-y

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