Experiment Experimental investigation and material characterization of friction welded aa7075 sicp metal matrix compositeal investigation and material characterization of friction welded aa7075 sicp metal matrix composite

Abstract

Aluminium alloy AA 7075 plays a vital role in the contemporary newlineworld due to its appreciable strength to weight ratio. Among the commercially newlineutilized aluminium alloys, AA 7075 (Al-Zn-Mg-Cu) is noted for good newlinemechanical properties and natural ageing characteristics which made it newlineattractive for areas that include aerospace, naval and automobile. On newlinecomparing with the conventional materials, aluminium metal matrix newlinecomposites display excellent mechanical and thermal properties which newlineestablished them as the area of research interest over recent years. Hence in newlinethis present work, Aluminium alloy AA 7075-T6 has been used as metal newlinematrix and SiC refractory particles as reinforcement.The SiC refractory newlineparticles of high strength and high modulus when added to the ductile metal newlinematrix, a typical material is produced which has got the toughness of the alloy newlinematrix as well as the hardness of hard refractory reinforcements. Hence, an newlinealuminium metal matrix composite material AA7075- 10% vol. SiCp-T6 newlinemetal matrix composite was developed with a good combination of strength, newlinetoughness, low density and high tensile strength and it has been used as work newlinematerial.However, the main difficulty with this type of material is its newlineinability to get welded with the fusion welding technique as it is susceptible to newlineweld solidification cracking, porosity, lack of fusion and harmful fumes. newline newline