Characterization of Al-Si aluminum alloy stir casting results with the addition of Mg and SiC elements

This research represents an advancement of the preceding study, specifically examining the Impact of SiC Addition on Resistance, Wear, and Hardness through Stir Casting of Aluminum Matrix Composites. Within this investigation, the identical casting technique, the Stir Casting Method, was employed, with a focus on Al-Si aluminum alloy incorporating SiC and Mg reinforcement. The composition of the raw materials mixture (Al-Si aluminum alloy) was 60%, while the adhesive materials mixture comprised 40%, consisting of 20% SiC and 20% Mg. The pour temperature utilized in melting the raw and adhesive materials in furnaces was set at 600°C and 700°C. Subsequently, the molten specimen samples were poured into mold patterns and further processed for hardness and impact tests. Impact test results were obtained for specimen samples with a 60% Al-Si alloy, combined with a mixture of 20% SiC and 20% Mg adhesives at a cast temperature of 600°C, yielding an Impact Energy of 68.60 J and Impact Strength of 0.85 J/m. Meanwhile, specimen samples at a cast temperature of 700°C exhibited an Impact Energy of -95.40 J and Impact Strength of -1.19 J. Hardness test results for specimen samples of the 60% Al-Si alloy, combined with a mixture of 20% SiC and 20% Mg adhesives at a cast temperature of 600°C, showed an average hardness of 65 kgf/mm. On the other hand, specimen samples at a cast temperature of 700°C displayed an average hardness of 50 kgf/mm.