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A Review on Investigation on Mechanical Properties of Aluminium Micro and Nano Composites Produced by Stir Casting

    Department of Mechanical Engineering, Cambridge Institute of Technology Tatisilwai, Ranchi

    poojakatheria@gmail.com

Abstract : The concept of composite A composite material is a material made from two or more constituent materials with significantly different physical or chemical properties that, when combined, produce a material with characteristics different from the individual components. The individual components remain separate and distinct within the finished structure. The new material may be preferred for many reasons: common examples include materials which are stronger, lighter, or less expensive when compared to traditional materials. Aluminium matrix composites (AMCs) have the potential to offer desirable properties, including low density, high speciûc strength, high speciûc stiffness, excellent wear resistance and controllable expansion coefficient, which make them attractive for numerous applications in aerospace, automobile, and military industries. Normally micron-sized particles are used to improve the ultimate tensile and yield strengths of the matrix, but the ductility of the AMCs deteriorates signiûcantly with high particle concentration. It is of interest to use nano-sized particles to strengthen the matrix, while maintaining good ductility, high temperature creep resistance and better fatigue resistance. Aluminium matrix composites (AMCs) reinforced with micro and nano-sized Al2O3 particles are an interested group of advanced materials, which are widely used for high performance applications such as automotive, military, aerospace and electricity industries.The composites possess improved physical and mechanical properties such as superior strength to weight ratio, good ductility, high strength and high modulus ,low thermal expansion coefficient, excellent wear resistance, excellent corrosion resistance, high temperature creep resistance and better fatigue strength.

Keyword : Composite, Metal matrix composite (MMCs), Nano composite, Production methods, Stir Casting, Reinforcement Particle, Process Parameters.