Optimizing of gas-shielded metal arc welding parameters for 10.5-12.5% chromium steel using 3o8L electrodes

The 10.5-12.5% chromium, titanium-stabilized ferritic stainless steel (FSS) plates used to fabricate coal line jumbo wagons is susceptible to undesirable chromium depletion during welding with 309L electrodes. In this work, non-stabilized FSS plates were welded using 308L welding electrodes. The objective was to weld non-stabilized FSSs using gas-shielded metal arc welding without causing sensitization. The welding process was optimized by lowering the heat input. Sensitization was assessed by rigorous etching techniques and anodic polarization scans. In addition, the welds were subjected to tensile testing, and their fracture surfaces were examined for intergranular cracking. Non-stabilized FSS plates were successfully welded using gas metal arc welding.

[1]  Jesper Sundqvist,et al.  Laser surface hardening of 11% Cr ferritic stainless steel and its sensitisation behaviour , 2018, Surface and Coatings Technology.

[2]  B. Beidokhti,et al.  Characterization of AISI 304/AISI 409 stainless steel joints using different filler materials , 2017 .

[3]  S. Yang,et al.  Influence of outer rust layers on corrosion of carbon steel and weathering steel during wet–dry cycles , 2014 .

[4]  Iván Díaz,et al.  Atmospheric corrosion data of weathering steels. A review , 2013 .

[5]  M. Amuda,et al.  An Overview of Sensitization Dynamics in Ferritic Stainless Steel Welds , 2011 .

[6]  M. Toit,et al.  The influence of stabilization with TITANIUM on the HEAT-AFFECTED ZONE SENSITIZATION of 11 to 12% chromium ferritic stainless steels under low heat input welding conditions , 2011 .

[7]  B. Rossi Mechanical behavior of ferritic grade 3Cr12 stainless steel—Part 1: Experimental investigations , 2010 .

[8]  A. Dhooge,et al.  Hybrid (plasma + gas tungsten arc) weldability of modified 12% Cr ferritic stainless steel , 2009 .

[9]  J. Norrish,et al.  Mitigation of sensitisation effects in unstabilised 12%Cr ferritic stainless steel welds , 2007 .

[10]  C. Allen,et al.  The abrasive-corrosive wear of stainless steels☆ , 1981 .

[11]  R. Rudrapati,et al.  Parametric Optimization of Gas metal arc welding process by PCA based Taguchi method on Austenitic Stainless Steel AISI 316L , 2018 .

[12]  Jesper Sundqvist,et al.  The Influence of Shielding Gas and Heat Input on the Mechanical Properties of Laser Welds in Ferritic Stainless Steel , 2015 .

[13]  M. Dahmen,et al.  Sensitization of Laser-beam Welded Martensitic Stainless Steels☆ , 2015 .

[14]  N. Redzuan,et al.  Effect of current on characteristic for 316 stainless steel welded joint including microstructure and mechanical properties , 2015 .

[15]  V. Kujanpää,et al.  The effects of laser welding parameters on the microstructure of ferritic and duplex stainless steels welds , 2010 .