Review on Friction Stir Welding of Dissimilar Metals

Abstract

Friction stir welding (FSW) is a solid–state joining process that is increasingly being used in various industrial applications due to its numerous advantages over conventional welding techniques. FSW uses a non-consumable rotating tool to generate frictional heat and plasticize the material in the joint, resulting in a defect-free, high-quality bond between two pieces of metal without the need for any filler material or shielding gas. The process is particularly well-suited for welding lightweight and high-strength materials, such as aluminium, magnesium and titanium and is known for its ability to produce joints with superior mechanical properties, including high fatigue strength and improved corrosion resistance. This paper addresses the need for future development in Friction Stir Welding.