Study of Microstructural, Machining and Tribological Behaviour of AA-6061/SiC MMC Fabricated Through the Squeeze Casting Method and Optimized the Machining Parameters by Using Standard Deviation-PROMETHEE Technique

Composite plays an important role for the last two decades in the engineering world. A judicious combination of two or more materials produces a synergistic effect that cannot be obtained by other means. Composites can also be defined as a combination of two or more physically distinct phases whose combinations produce excellent properties that are different from those of their constituents. The final cast structure of components mainly depends on the suitable selection of processing parameters. The casting parameter should be controlled very accurately to achieve sound castings. Several processing parameters often influence the final properties of the product. Therefore obtaining, an excellent metal matrix composite by squeeze casting necessitates optimization of process parameters. However, the utmost influencing process parameters are die and melt temperature even though the applied pressure is considered to be important. Hence squeeze casting is adopted because of thermal limitation within the aluminum alloys. Although it is possible for copper alloys, cast iron, and steel can also be squeeze cast. In this investigations of 700,740,780 and 820 °C melting temperature of Aluminum Alloy AA6061 was carried out and its effects were studied. To investigate the microstructure stability and particle distribution after squeeze casting also to study the porosity reduction concerning process parameters which can investigate the improvements in mechanical properties. Further, to examine the outcome of melt temperature, die temperature, squeeze pressure of AA6061/SiCp Metal matrix composite. Wear rate analysis of AA-6061/SiC metal matrix composite involves evaluating the material's resistance to wear and determining the rate at which it experiences material loss during sliding or abrasive contact. Factors such as sliding velocity, load, and surface morphology are considered to assess wear performance. Electro Discharge Machining (EDM) of AA-6061/SiC Metal Matrix Composite involves using electrical discharges to remove material. EDM is effective for machining complex shapes and hardened materials, but care must be taken to control the process parameters to minimize damage to the SiC particles and ensure dimensional accuracy.