Effect of Continuous and Pulsed Currents on Microstructural Evolution of Stainless Steel Joined by TIG Welding


Durgutlu A., Findik T., Gulenc B., Cevik B., Kaya Y., Kahraman N.

PRAKTISCHE METALLOGRAPHIE-PRACTICAL METALLOGRAPHY, cilt.52, ss.627-637, 2015 (SCI İndekslerine Giren Dergi)

  • Cilt numarası: 52 Konu: 11
  • Basım Tarihi: 2015
  • Doi Numarası: 10.3139/147.110352
  • Dergi Adı: PRAKTISCHE METALLOGRAPHIE-PRACTICAL METALLOGRAPHY
  • Sayfa Sayısı: ss.627-637

Özet

In this study, AISI 316L series austenitic stainless steel sheets were joined by tungsten inert gas welding method in continuous and pulsed currents. Regarding microstructural investigation and hardness values of weld metal, samples were welded to investigate the effect of current type on grain structures of weld metal. Results showed that samples welded by using pulsed current had considerable different properties compared to the samples welded by using continuous current. While the weld metals of joinings obtained by using continuous current displayed a coarse-grained and columnar structure, weld metals obtained by using pulsed current had a finer-grained structure. It was also found that hardness values of samples, which were welded with continuous and pulsed current, were quite different.