EXPERIMENTAL STUDY ON MECHANICAL AND TRIBOLOGICAL PROPERTIES OF ALUMINIUM ALLOY 7075 REINFORCED WITH SILICON CARBIDE AND FLY-ASH, HYBRID METAL MATRIX COMPOSITES USING SEM , TAGUCHI METHOD AND GENETIC ALGORITHM

Author’s Name : P Vivekanandan

Volume 02 Issue 01  Year 2015  ISSN No:  2349-3860  Page no: 4-7

Abstract – Aluminium based metal matrix composites (MMCS) are advanced materials having the properties of high specific strength and modulus,greater resistance, high elevated temperature and low thermal expansion co efficient. These composites are widely used in industries like aerospace, defence,automobile, biomaterials as well as sports etc. The mechanical and metallurgical properties of aluminum alloy 7075 metal matrix composite were investigated. The composite were prepared using the stir casting technique. The composite contains aluminium alloy 7075 reinforced with silicon carbide and flyash respectively. Composites are fabricated through ‘Stir Casting Method’. Mechanical properties such as Tension, Hardness, and Wear test of the samples are measured and validated by using Taguchi and Genetic algorithm methods. The tested samples are examined using Scanning Electron microscope (SEM) for the characterization of microstructure on the surface of composites. The results of the research work shows that the proposed Hybrid composites are compared with Al based metal matrix composites at corresponding values of test parameters.

Keywords –AA 7075, SiC, Fly ash, Metal matrix composites; stir casting; process parameter,Taguchi, SEM, Genetic algorithm