Processing and Characterization of Particulate Reinforced Aluminum 6061 Hybrid Metal Matrix Composites

摘要

This paper describes and discusses the processing and characterization of alumina red mud particulate reinforced aluminum 6061 alloy matrix composites. In this regard, alumina (Al_2O_3) and red mud particulate reinforced A6061 alloy matrix composites were fabricated by sand molding process with different particulate weight fractions. Hardness and tensile tests were performed to determine the hardness, tensile strength, yield strength and modulus of elasticity. Scanning electron microscopy studies have been performed to study the morphological aspects and characterize the fracture surface of the composite samples after tensile testing. Hardness and tensile strength of the composites increased with the increase in weight fraction of particulates reinforcement. The processed composite materials mechanical behavior is well supported by the fractographs taken using the scanning electron microscope.