AN EXPERIMENTAL ANALYSIS AND WELDING PARAMETER OPTIMIZATION IN FRICTION STIR WELDING FOR ALUMINUM AND MAGNESIUM ALLOY MATERIALS

Friction stir welding (FSW) is a welding phenomenon where metals are plasticized and joint with suitable applied pressure. It is a solid state of welding process with non-consumable tool. Magnesium alloy materials like AZ31 and AZ91 are selected in this experimental work. Because, this alloys having low density as compare to steel so it is lighter in weights. Also this material are having good strength, ductility and corrosion resistance [21]. A taguchi approach along with design of experiment (DOE) methodology are used to optimize weld parameter. Rotating seed, transverse speed and materials are selected as a working parameter for experimentation. After a weld tensile test is used to determine different design parameter of different weld specimen.