Metal matrix composites of 6061Al - Al2O3 matrix are associated as standard materials inside the space of flying, car and marine applications to move forward the physical properties. Particulates of Al2O3 with 40 µm, 60 µm &100 µm were reinforced utilizing Die casting method. Next stage of fortress is being changed from 0-16wt% in steps of 4wt%. Microstructural characterization has been conducted for the composites to check the homogeneous movement of particles. Fatigue and Facture Toughness properties of 6061Al - Al2O3 composite have been inspected. Effect of fortress on the Disintegration, Shortcoming and Facture toughness properties was considered carefully. A considerable enhancement in Fatigue and Facture Toughness properties was observed by the incorporation of particulates. Formation uniformly dispersed particulates in the matrix was observed for the composite up to 12% filler composition.

The aim of this work is to investigate the corrosion Studies of Aluminum Oxide (Al2O3) reinforced Aluminum 6061 metal matrix composites in Different Concentrations of HCl & NaCl solutions using weight loss method, Potentio-dynamic & EIS Technique. The composites have been prepared by Die- casting method. Aluminum 6061 / Al2O3 MMCs containing different sizes such as 40, 60, and 100 microns and 0, 4, and 8 weight percentages of Al2O3 particulates are casted. The corrosion characteristics of Aluminum 6061 / Al2O3 composite and the unreinforced alloy were experimentally assessed. The results indicated that corrosion rate of metal matrix composites is lower than that of matrix material Al 6061 under the corrosive atmosphere irrespective of exposure time and concentration of corrodent. Aluminum 6061 / Al2O3 composite become more corrosion resistant as the Al2O3 content is increased. This is because of the formation of stable oxide layer over the specimens. Scanning Electron Microscopy (SEM) shows the degree of attack of HCl & NaCl solution on the surface of the investigated material.