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

Abstract

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.

Investigation of ER308L and ER309L filler wires on dissimilar metals between carbon steel and 3CR12 ferritic stainless steel by GTAW through boiler fabrication in a sugar factory

“…Thus, the selection of austenitic stainless steel filler wires and the process parameters are key to provide the quality of the welded joint. The previous researches [6][7][8] report the most suitable fillers wire as ER309L and ER316L however ER308L filler wire was suitable reported by Vithi et al [9] and Maleka et al [10]. The process parameters have influence on the microstructure and mechanical properties of the welded joint [11].…”