Impact of Process Parameters on the Microstructure & Mechanical Properties of Friction Stir Welded AA 6063-T6 ALLOY

摘要

Friction Stir Welding is a solid state welding technique that is largely used in aerospace, marine, automotive and other industries for joining similar and dissimilar metals. As compared to other welding methods friction stir welding provides better results. It is a reliable technique because it permits aluminium alloy welding. Products of FSW that is welded aluminium alloys have a great importance in various industries because of good quality welding joint. This paper depict about the friction stir welding carried on aluminium 6063. we observe various welding parameters like transverse speed, rotational speed, dwell time etc. our main objective is to find mechanical properties of the friction stir welded aluminium joints on different or optimized input parameters. The Mechanical properties of welded aluminium joints that we investigate by mechanical methods are Tensile strength (UTS, YS, and Elongation), hardness, and microstructure. Their structure, physical and mechanical properties of the composite are related to connection with the size effects and other particulars in detail to make high end materials. NASA is also using friction stir welding technique in vogue to make space crafts due to need of light weight and high strength to withstand for longer times in difficult conditions. Here in this research various mechanical investigations are done on aluminium alloy 6063-T6. They include tension test by using universal testing machine UNITEK- 94100, micro Vickers micro hardness test by using micro Vickers apparatus and microstructural test to estimate working limits of the welded specimen of aluminium 6063 by varying the machine parameters.