A Review Study on A-TIG Welding of 316(L) Austenitic Stainless Steel

Austenitic stainless steels are widely used in the application of aircraft engine parts, heat exchangers, furnace parts etc. It contains both chromium and nickel. Nickel and chromium aids stability of austenite over wide range of temperatures and high corrosion resistance respectively. 316L austenitic stainless steel is low carbon (0.03%) steel, developed from 316 austenitic stainless steel and contains carbon (0.08%).  The causes of decreased contents of carbon, minimizes the problem of harmful carbide precipitation during welding. Activated Tungsten Inert Gas (A-TIG) welding can increase the joint penetration and weld depth-width ratio, thereby reducing angular distortion of the weldment. This paper address the A-TIG welding, and their significance & advantages. Keywords: 316L austenitic stainless steel, A- TIG welding and Marangoni convection, Arc Constriction Effect.