Investigate Combine Effect of Tool Geometry and Machining Parameter on Microstructure and Tensile Behavior of Friction Stir Welded Aluminium Alloy AA7075-T6

FSW is a solid state joining technique in which no melting is involved. This technique is very attractive for high strength aluminium's alloys. 7xxx series aluminium alloys are difficult to welded by fusion welding process because of hydrogen solubility, formation of aluminium oxides, solidification shrinkage etc. which can alternate by friction stir welding process. FSW is widely used for application where the original metal characteristics must remain unchanged as far as possible. Mechanical characterization, similar and dissimilar combinations, micro structural characteristics and influence of tool pin profiles for FSW is some of the important parameter. It is important to understand the tensile and microstructure characteristics of friction stir welds due to potentially wide range of engineering applications like automobile, aerospace, shipbuilding, railway industries etc. of friction stir welding. The aim of present work is to investigate combine effect of tool geometry and machining parameter on microstructure and tensile properties of friction stir welded aluminium AA7075-T6.