Author : Deepak Gupta, Amit Bansal and Sandeep Jindal

The present review paper consists of mainly two sections. Section one, mainly aims to review the effect of alloy addition on duplex stainless steel-2205 grade. While section second, reviewed the effect of different welding parameters of various welding processes on microstructure, mechanical properties and corrosion resistance of duplex stainless steel-2205 grade. Duplex steel mainly consists of ferrite and austenite. Duplex steel find wide uses in off shore application, due to its admirable mechanical properties and great corrosion resistance. The above properties of duplex steel can be improved by adding various alloying elements i.e. chromium, nitrogen, molybdenum, manganese, nitrogen, copper etc. Generally, the welding of duplex steel is not an easy task. Different welding process uses the thermal, chemical, mechanical and electrical phenomena for melting the duplex steel’s faying surface. The effect of various welding inputs of different welding processes (submerged arc welding, Plasma arc welding, Electron beam welding, Laser beam welding, Tungsten inert gas welding and Friction stir welding) being used for welding of duplex steel are reviewed. Finally, a compressive study is made on effect of welding conditions on microstructure, mechanical properties and corrosion resistance of duplex stainless steel-2205 grade.

Keywords: Duplex stainless steel (DSS), alloying element, welding methods (SAW, PAW, EBW, LBW, TIG, FSW), welding parameters, mechanical properties, microstructure.