Abstract
This study aimed to evaluate different TIG welding procedures to optimize the performance of AISI 304L pipes in corrosive applications. For that, samples welded by the TIG process. And samples were produced with the electric current density as a variable. Electric current density with a constant current and current in pulsed mode were used. The electrochemical behavior of the welded joints was evaluated using the potentiodynamic polarization technique and the double pulse potentiokinetic reactivation technique. The microstructural characterization and the area exposed to scanning were performed by optical microscopy and scanning electron microscopy. The results indicated that the 250 Hz pulsed TIG process obtained the noblest electrochemical parameters, and the best performance was attributed to associating low average current density and high welding speed.
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