Optimising of gas metal arc welding parameters on 10.5-12.5% chromium steel using 308L electrodes for railway vehicle application
DOI:
https://doi.org/10.17159/Abstract
Abstract
10.5- 12.5% chromium; titanium stabilised ferritic stainless-steel (FSS) plates and 309L electrodes are currently used to fabricate coal line jumbo wagon. These steels are susceptible to the undesirable chromium depletion during welding. In this work non-stabilised ferritic stainless steels plates are welded using 308L welding electrodes. The purpose of the study was to weld non-stabilised ferritic stainless steels using gas metal arc welding without causing sensitisation. Gas metal arc welding process was optimised by lowering the heat input. This research focuses on optimisation of welding the non-stabilised ferritic stainless steel using 308L without causing sensitization. Sensitisation assessment was successfully conducted by rigorous etching techniques and anodic polarisation. In addition, the welds were subjected to tensile testing and their fracture surfaces were examined for intergranular cracking. Non-stabilised ferritic stainless steel was successfully welded with gas metal arc welding.
Keywords: Titanium stabilised ferritic stainless steel, welding parameters, 308L welding wire, gas metal arc welding, heat input
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Copyright (c) 2024 Audrey Makgalake Maleka
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