Development and Characterization of Al-SiC Metal Matrix Composites Through Microwave Processing and Extrusion

Honnaiah Chikkaputtaiah, Srinath Mandya Sridharmurthy, Ajit Manohar Hebbale, Shashank Lingappa Marahadige, Madhu Puttegowda

Abstract

Metal matrix composites (MMCs) have garnered significant attention due to their exceptionally lightweight nature, adaptability for a wide range of applications, and exceptional mechanical properties. This investigation delves into the tribological characteristics of aluminum-silicon carbide (Al-SiC) microelectrodes. These MMCs were refined through extrusion after being fabricated using a novel microwave-assisted powder metallurgy process. The impact of reinforcement content on the material's mechanical strength and wear resistance was assessed by varying the weight percentages of SiC (10%, 15%, and 20%). The results indicate that the uniform distribution of SiC within the aluminum matrix significantly enhances the composite's hardness and wear resistance. The addition of 20% SiC resulted in a 28% reduction in the wear rate compared to pure aluminum. In addition, the extrusion procedure improved these properties by aligning the SiC particulates in the direction of extrusion and reducing porosity. This investigation demonstrates that the combination of microwave sintering and extrusion can produce high-performance Al-SiC MMCs with enhanced abrasion resistance and mechanical properties, making them suitable for industrial applications that require lightweight materials and durability.

Keywords

References

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DOI: 10.14416/j.asep.2024.11.010

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