TY - JOUR T1 - Investigation of Corrosion Behavior and Galvanic Corrosion Simulation of Super Duplex Stainless Steel UNS S32750 Weld Zone TT - بررسی رفتار خوردگی و شبیه سازی خوردگی گالوانیکی منطقه جوش فولاد زنگ نزن سوپردوفازی UNS S32750 JF - JWSTI JO - JWSTI VL - 4 IS - 1 UR - http://jwsti.iut.ac.ir/article-1-183-en.html Y1 - 2018 SP - 113 EP - 126 KW - Super Duplex Stainless Steel KW - Galvanic Corrosion Simulation KW - Friction Stir Welding KW - Gas Tungsten Arc Weldingcture Mode. N2 - Galvanic corrosion is an ever-present problem in all different environments, particularly in tanks. The goal of this project is to develop a finite element model that can be used with experimental data to characterize the corrosion of a galvanic weldments couple in an electrolyte. In this study sample are welded by gas tungsten arc welding and friction stir welding. According to ASTM G8, Evaluation of corrosion properties examined with cyclic polarization test in 0.5 molar H2SO4 andthe information required to validate the model was prepared. The finite element model is developed using COMSOL and Math Module through derivation of equations describing corrosion thermodynamics and electrochemical kinetics. The results showed that reducing in heat input to improve galvanic corrosion behavior in the weld sample.In addition to result of simulation reveal sample that welded by gas tungsten arc method had higher current density galvanic corrosion in comparison with friction stir sample. M3 ER -