Effect of Square Pin Tool on Friction Stir Welded AA 6061-T6 from the Perspective of Revolution Pitch

The phenomenon of revolution pitch was studied on AA 6061-T6 with a square pin tool for friction stir welding (FSW). rotational speed and traverse were varied at four levels selected in manner so that the could comprise both lower higher magnitude variation when compared among them. An attempt made to investigate material flow from macrostructure vertical (transverse direction) horizontal (parallel weld surface) cross-section. study showed significant amount terms spindle torque, forces, flow, tensile properties. increased noticed top surface advancing retreating side pitch. Whereas an observed downward direction through nugget. At clear division onion ring towards side. force consistent trend change As finer nugget grains obtained causing