Metals, Volume 9, Issue 7 (July 2019) – 94 articles
Cover Story (view full-size image): The outstanding mechanical and corrosion properties of duplex stainless steels (DSSs) highly depends on the austenite-to-ferrite phase balance (A/F). This phase ratio can shift in a large scale during welding. To influence the A/F, nitrogen addition to argon shielding is frequently used because the dissolved nitrogen content in the weld metal (WM) predetermines the A/F. An improved theoretical model was established in order to simulate the WM dissolved nitrogen content, and it was validated using six different shielding gases at two heat input levels. This improved model delivers the basics for shielding gas selection and the subsequent weld design. View this paper.
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