Friction Stir Welding of Austenitic Stainless Steel by PCBN Tool and its Joint Analyses

AISI-316 plates of thickness 4 mm are joined by friction stir welding (FSW) with varying welding parameters like tool rotation speed (rpm) and welding speed (mm/min). All welded samples are observed by optical microscopy followed by their tensile tests. Mechanical strength of 104% of the base material with comparable elongation is achieved in FSW sample of 1100 rpm rotation speed and 8 mm/min welding speed.