... and chemical plants, and renewable energy applications where duplex stainless steel is no longer an option. The welding process is crucial for fabrication, particularly when selecting filler metal. However, certain filler metals may be challenging to acquire or have extended delivery times. The goal...

..., such as excellent resistance to pitting, crevice corrosion, and stress corrosion cracking. In many applications where UNS S83071 is used, welding is often required, particularly in the fabrication of heat exchangers where tube-to-tubesheet welding is standard. It is therefore important to have good knowledge...

.... The present study examines this concern. In this work, the GTAW (TIG) method will be used to weld 2 mm thick sheets autogenously and with Ni-based filler metal ERNiCrMo-13. The tests were performed for a combination of different shielding and backing gases with and without additions of nitrogen. The welds...

...Abstract Several offshore pipelines in Pre-salt fields, Brazil, are made of Super Duplex stainless steel. When welded, in general, these materials present a decrease in its corrosion resistance. Welding procedures, materials properties, surface conditions and post-weld treatment have influence...

...For corrosion tests, weld surfaces were tested in “as-welded” condition, since the oxygen content in back purging gas affects the oxide formation, and after post-weld surface treatment by pickling and passivation. For the last, the coupons were pickled for immersion in a bath containing 3...

...Gaseous hydrogen pipeline welding hydrogen embrittlement diffusion steel production emerging fuels INTRODUCTION While dedicated hydrogen pipelines have been present on the Gulf Coast of the US for decades, new application opportunities are opening up for transportation of hydrogen...