Effect of Stirring Parameters on Microstructure of Aluminum hybrid Metal Matrix Composite

Abstract

Developing a new material in the field of aerospace, automobile and machine tool place an important role. The new composites are developed to improve the mechanical, tribological and thermal properties. Composite means combining two or more materials to improve the properties of base material, the base materials are called as Matrix and other materials are called as reinforcements. Stir casting is one of the most economical and simple method to develop new composite. But distribution of reinforcement particles into the matrix material is bit difficult therefore to achieve uniform distribution of reinforcement into the matrix is controlled by controlling the stirring parameters like Stirring Speed, Stirring Temp and stirring time. The present study is focused on developing new composite by stir casting and also studies t he effect of stirring parameters on microstructure and mechanical properties of the composite. Here aluminum is used as a matrix (94% and 90%), boron fiber powder as reinforcement (4% & 8%) and graphite (2%). And XRD analysis shows the presence of reinforcement and also The SEM images show uniform distribution of reinforcement particles in the matrix at stirring temperature of 800c, stirrer is rotated at 250rpm for the duration of 5min and also EDAX images shows the percentage of reinforcement distributed into the base matrix