Effect of Welding Speed on the Microstructure and Mechanical Properties of Austenitic Stainless Steel Welds

  • Li, C. (Department of Materials Science and Engineering, Pukyong National University) ;
  • Jeong, H.S. (Division of Materials Science and Engineering, Pukyong National University)
  • Published : 2003.06.01

Abstract

The effect of the welding speeds on the weld bead shape, microstructure, and mechanical properties in type 304 austenitic stainless steels was investigated by microscopic test, Erichsen test and tensile test. In this study welds were produced using autogeneous Direct Current Straight Polarity (DCSP) and pulsed current GTA welding. This study shows the ferrite content, ductility, tensile strength and elongation of high speed welds are decreased with increasing welding speed. The high speed welds exhibits satisfactory tensile strength, though the ductility is not good as that of the base metal.