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Título: | Influence of chromium on the passivity of thermo-mechanically processed high-Mn TWIP steels |
Autor: | Fajardo, Santiago CSIC ORCID ; Llorente, Irene CSIC ORCID ; Jiménez, José Antonio CSIC ORCID ; Calderón, N. CSIC; Herrán-Medina, D.; Bastidas Rull, José María; Ress, J.; Bastidas, David M. CSIC ORCID | Palabras clave: | Thermo-mechanical processing TWIP steel Passivity Chromium Cyclic potentiodynamic polarization XPS |
Fecha de publicación: | 2020 | Editor: | Elsevier BV | Citación: | Applied Surface Science 513: 145852 (2020) | Resumen: | Thermo-mechanical processed (TMP) TWIP steels with high-Mn content and different amounts of Cr, Fe-30Mn-5Al-0.5C-(x)Cr, were studied using cyclic potentiodynamic polarization (CPP), optical microscopy (OM), scanning electron microscopy (SEM), and energy dispersive X-ray spectroscopy (EDX) in a deaerated 0.1 M NaCl solution. Additionally, X-ray photoelectron spectroscopy (XPS) was used to analyse the chemical composition of the passive film generated potentiostatically on TMP specimens in the deaerated 0.1 M NaCl solution. The results indicate a beneficial effect of Cr additions on the passivity of TWIP steels. However, a high content of Cr seemed to cause a phase-segregation process reducing the corrosion resistance properties of the material. The results also indicate that TMP enhances corrosion attack. | Versión del editor: | https://doi.org/10.1016/j.apsusc.2020.145852 | URI: | http://hdl.handle.net/10261/216470 | DOI: | 10.1016/j.apsusc.2020.145852 | Identificadores: | doi: 10.1016/j.apsusc.2020.145852 issn: 0169-4332 |
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