Assumpção, Raphael FrançaMonteiro, Jessica Caetano FortesCampideli, Victor CardosoSantos, Dagoberto BrandãoSicupira, Dalila Chaves2023-11-222023-11-222023ASSUMPÇÃO, R. F. et al. Influence of aging time at 850°C on microstructure and corrosion resistance of a cold rolled 2205 duplex stainless steel. Archives of Metallurgy and Materials, v. 68, p. 681-688, 2023. Disponível em: <https://journals.pan.pl/dlibra/publication/142449/edition/127406/content>. Acesso em: 01 ago. 2023.1733-3490http://www.repositorio.ufop.br/jspui/handle/123456789/17841The effect of aging time at 850°C for 300 s, 600 s, 1800 s, and 84600 s on the microstructural evolution and corrosion resistance of 2205 duplex stainless steel (DSS) was studied after cold rolling up to 60% of reduction. X-ray diffraction, scanning electron and transmission electron microscopy were used for microstructural characterization. The corrosion behavior was studied by cyclic potentiodynamic polarization (CPP) and electrochemical impedance technique (EIS) in 3.5% NaCl solution and the susceptibility to sensitization was investigated through the double loop electrochemical potentiodynamic reactivation (DL-EPR) test in 0.5 M H2SO4 + 0.1 M NaCl + 0.002 M KSCN solution. After cold working, increasing aging time led to an increase in sigma phase precipitation and a decrease in pitting corrosion resistance. However, the ultrafine microstructure had a beneficial influence on the self-healing effect in Cr and Mo depleted areas with the increasing of aging time, resulting in higher passivation ability. The DSS 2205 type was not susceptible to intergranular corrosion for the aged conditions applied.en-USabertoDuplex stainless steelAgingCorrosionSecondary phasesSelf-healingArtigo publicado em periodicoThis is an open-access article distributed under the terms of the Creative Commons Attribution-NonCommercial License (CC BY-NC 4.0, https://creativecommons.org/licenses/by-nc/4.0/deed.en which permits the use, redistribution of the material in any medium or format, transforming and building upon the material, provided that the article is properly cited, the use is noncommercial, and no modifications or adaptations are made. Fonte: PDF do artigo.https://doi.org/10.24425/amm.2023.142449