Experimental Studies on Mechanical Behavior of TIG and Friction Stir Welded AA5083 -AA7075 Dissimilar Aluminum Alloys

Welding is a suitable and better process to manufacture complex objects for aerospace, naval, automotive structures. Service conditions complexity in load acting force the manufactures make joints between dissimilar materials. Thus, there need efficient welding techniques form sound an understanding of imperfections their effects. In this study attempt has been made joining feasibility aluminum alloys by two different techniques, namely, tungsten inert gas (TIG) friction stir (FSW). Dissimilar AA5083-O AA7075-T651 successfully joined considered techniques. Metallurgical mechanical characteristics fabricated weld are studied at currents (80–120 amp) TIG various rotational speeds (800, 1000, 1100, 1200, 1400 rpm) with constant traverse speed FSW. Weld FSW exhibit superior tensile strength, whereas joint line microhardness samples higher than ones.