A STUDY ON EFFECT OF PARAMETERS ON TENSILE STRENGTH OF FRICTION STIR WELDING AA6061 1.5mm PLATE BUTT-JOINT

Abstract

As commonly known, fusion welding of aluminium alloys is accompanied by the defect like porosity, solidification and crack. Friction stir welding offers a defect free weld joint since there is no melting process undertaking. Even so, there are still drawbacks are due to improper plastic flow of materials such as severe softening in Heat Affected Zone (HAZ) and defects like pinhole and cracks. This defect can lead to deteriorate of tensile properties of welded materials. As welding parameters play a major role in deciding weld quality, this project looks into the effect of using different rotational speed and tool travel speed on the strength of welded joint and defects that may occur during the welding process of aluminium plates.