Plasma Arc Welding of AISI316Ti (EN 1.4571) Stainless Steel: Mechanical, Microstructural, Corrosion Aspects

Abstract AISI316Ti (EN1.4571) austenitic stainless steel plates with a thickness of 7 mm were welded by plasma arc welding (PAW) process. Joints were obtained using 316L type of filler metal as well as without filler metal called as Weld 1 and Weld 2, respectively. Tensile and bend testing of the joints were carried out. Impact toughness tests carried out at temperatures from 20 °C down to −60 °C have shown encouraging results. Chemical analysis of the weld deposits were made by glow discharge optical emission spectrometry (GDOES). Photomacrographs and photomicrographs of the cross-sections were used to determine ferrite content and hardness. Intergranular corrosion tests in accordance with TSEN 3157/ENISO 3651-2 were carried out. No corrosion sign was reported. The effect of the consumable has the most influence on the toughness properties. Promising mechanical, toughness and corrosion results are useful, considering the implementation of an innovative process, thus PAW of 316Ti stainless steel.

[1]  R. Sánchez-Tovara,et al.  Corrosion behaviour of micro-plasma arc welded stainless steels in H 3 PO 4 under flowing conditions at different temperatures , 2015 .

[2]  Marko Canadija,et al.  AISI 316Ti (1.4571) steel—Mechanical, creep and fracture properties versus temperature , 2011 .

[3]  E. Kaluç,et al.  Welding behaviour of Duplex and Superduplex Stainless Steels using Laser and Plasma ARC Welding processes , 2011 .

[4]  M. T. Montañés,et al.  Corrosion behaviour of micro-plasma arc welded stainless steels in H3PO4 under flowing conditions at different temperatures , 2011 .

[5]  G. Papadimitriou,et al.  Plasma Keyhole Welding of UNS S32760 Super Duplex Stainless Steel: Microstructure and Mechanical Properties , 2010 .

[6]  Her-Yueh Huang,et al.  Effects of shielding gas composition and activating flux on GTAW weldments , 2009 .

[7]  A. Dhooge,et al.  Plasma Arc Welding of Modified 12%Cr Stainless Steel , 2009 .

[8]  E. Taban.  Joining of Duplex Stainless Steel by Plasma Arc, TIG, and Plasma Arc+TIG Welding Processes , 2008 .

[9]  Emel Taban,et al.  Toughness and microstructural analysis of superduplex stainless steel joined by plasma arc welding , 2008, Journal of Materials Science.

[10]  T. Michler.  Toughness and hydrogen compatibility of austenitic stainless steel welds at cryogenic temperatures , 2007 .

[11]  A. Coy,et al.  Influence of Ti, C and N concentration on the intergranular corrosion behaviour of AISI 316Ti and 321 stainless steels , 2007 .

[12]  Alejandro Ureña,et al.  Weldability of a 2205 duplex stainless steel using plasma arc welding , 2007 .

[13]  M. Torkar.  Corrosion of AISI 316 Ti in 50% KOH due to deformation induced martensite , 2006 .

[14]  M. Pham,et al.  Correlation between PIII nitriding parameters and corrosion behaviour of austenitic stainless steels , 2005 .

[15]  A. Gustafson.  Coarsening of TiC in austenitic stainless steel — experiments and simulations in comparison , 2000 .

[16]  M. Oberndorfer,et al.  Application limits of stainless steels in the petroleum industry , 2004 .

[17]  W. Möller,et al.  Nitriding of austenitic stainless steels using plasma immersion ion implantation , 1998 .