Corrosion Resistance of GMAW Duplex Stainless Steels Welds

Abstract

The hydrocarbon industry constantly requires a better understanding of stainless-steel welding metallurgy. Despite the fact that gas metal arc welding (GMAW) is one of the most commonly employed welding processes in the petrochemical industry, the process is characterized by the presence of a high number of variables to control in order to obtain components that are dimensionally repeatable and satisfy the functional requirements. In particular, corrosion is still a phenomenon that highly affects the performance of the exposed materials, and special attention must be paid when welding is applied. In this study, the real operating conditions of petrochemical industry were reproduced through an accelerated test in a corrosion reactor at 70 °C for 600 hours, exposing robotic GMAW samples free of defects with suitable geometry. The results show that, even if duplex stainless steels are characterized for being more corrosion resistant than other stainless steels, under these conditions it was possible to identify microstructural damage. In detail was found that the corrosion properties were strongly related to the heat input during welding and that the best corrosion properties can be obtained with the higher heat input.

Corrosion behaviors of super austenitic stainless steel weldment by GTAW welding for ships desulfurization system

“…Stainless steel parts are usually welded in many applications and conventional arc welding processes such gas metal arc welding (GMAW) and gas tungsten arc welding (GTAW) processes are widely employed in the joining of these materials (Serіndağ and Çam, 2021;Serindağ and Çam, 2022a;Serindağ and Çam, 2022b;Ezer and Çam, 2022;Serindağ et al, 2022;Şenol and Çam, 2023). However, despite the excellent corrosion resistance of stainless steels, the problem of localized corrosion of the welded parts after the welding process has been continuously reported (Heino, 2000;Kang et al, 2012;Wu et al, 2019;Chacón-Fernández et al, 2022;Miranda-Pérez et al, 2023). Miranda-Pérez et al examined the corrosion resistance of the welds of duplex stainless steels fabricated by gas metal arc welding (Miranda-Pérez et al, 2023).…”

“…However, despite the excellent corrosion resistance of stainless steels, the problem of localized corrosion of the welded parts after the welding process has been continuously reported (Heino, 2000;Kang et al, 2012;Wu et al, 2019;Chacón-Fernández et al, 2022;Miranda-Pérez et al, 2023). Miranda-Pérez et al examined the corrosion resistance of the welds of duplex stainless steels fabricated by gas metal arc welding (Miranda-Pérez et al, 2023). They concluded that higher heat input yielded the most favorable corrosion properties when exposing both a synthetic seawater solution and exposure to H 2 S gas.…”

Effect of Nitrogen‐Added Shielding Gas on Microstructure Evolution of Welded Joints by Gas Tungsten Arc Welding Process in Duplex Stainless Steel 2205

“…[ 1–5 ] Within the sectors of the petrochemical, chemical, and/or natural gas industries, the manufacturing of applications or infrastructure stands out as one of the most challenging environments for metallic materials, especially in terms of susceptibility to corrosion. [ 6–9 ] In this context, the use of alloys with notable resistance to this phenomenon, coupled with manufacturing process control, becomes of critical importance. This combination is essential to ensure that the final production maintains high standards of quality.…”

Recent Advances in Additive Manufacturing of Soft Magnetic Materials: A Review

“…In recent years, efficiency and sustainability in the energy sector (such as the oil and gas industry, aerospace, and automotive sector, specifically electric vehicle production) [ 1 , 2 , 3 , 4 , 5 , 6 , 7 ], along with the demand for a reduction in pollutant emissions, have driven the advancement of materials for such purposes. These advancements extend to manufacturing methods as well, most prominently additive manufacturing (AM), driven by the imperative to curtail pollutant emissions.…”