Microstructure and tensile fractographic behavior of Al-4.5wt.% Cu-SiC-flyash composites: synthesized in different diameter casting dies
DOI:
https://doi.org/10.34117/bjdv11n12-035Keywords:
Al-4.5wt.%Cu alloy, fly ash particulates, SiC Particles, microstructure, T SAbstract
Metal Matrix Composites (MMC) are advanced materials that consist of a primary phase being the matrix phase and a secondary phase such as fibers, particulates etc. These advanced materials exhibit different properties that are admirable to those of traditional monolithic metals, including properties such as high strength to weight ratio, stiffness, wear resistance and thermal stability. In the present investigation, the matrix material Al-4.5wt.%Cu alloy was reinforced with Fly ash and SiChybrid composites fabricated using a Stir-Squeeze cast technique. and the composites were manufactured in steps of 3wt% fly ash and 3 wt% SiCand 3wt% fly ash and 5 wt% SiCand prepared using 25mm and 50mm diameter dies. Microstructural characterization of the composites was determined using SEM, and EDS analysis. Mechanical properties such as hardness, Y Sand UTS were investigated as per ASTM standards. The composites prepared in 25mm cast iron die exhibited superior mechanical properties as compared to the composites prepared in 50 mm diameter cast iron die. The mechanical properties of Al-2024 alloy were refined with the addition of reinforcements such as fly ash and SiCparticulates.
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