Investigation of Mechanical and Microstructural Properties of Friction Stir Welded Aluminium Alloy 6063
A. Saravanakumar, T. Senthil Kumar, B. Kumaragurubaran
Friction stir welding (FSW) is a solid state welding process in which coalescence is achieved by frictional heat combined with pressure. In this project effect of friction stir welding on microstructure and mechanical properties of aluminium 6063 alloy is investigated .The main work is to investigate the different parameters tool rotational speed and tool transverse speed which enhance properties through FSW. In this process, the properties of the material are enhanced during visco-plastic deformation. The microstructure examination is done with optical microscope and mechanical properties tensile and hardness tests. The corrosion resistance properties are tested by the salt spray corrosion test. Microstructure and mechanical properties are correlated for the chosen alloy before and after FSW. The experimental results showed the lower the ratio of rotation speed and weld speed, the narrower the softened zone and the higher tensile strength. The corrosion resistances of the welded metal rotational speed 560rpm with traverse speed 40mm/min are high.