The Investigation of Microstructure and Mechanical Properties of Austenitic Stainless Steel Joints Obtained by Different Welding Methods and Different Welding Parameters

In this study, two different welding methods as TIG and TIG Pulse are used for joining 304 series stainless steel sheets having 2 mm thickness. In preparation of welded specimens were used three different welding currents ranging from 70 A to 110 A by rise of 20 A.. The microstructure differences of the weld joints obtained by using two different welding methods and three different welding currents were investigated. Tensile specimens prepared according to standards were exposed to tensile testing at as speed of 20 mm/s. Fracture surfaces obtained from tensile test of welded specimens were examined and their mechanical properties were compared.