Corrosion behavior of Al–3Mg–0.2Sc alloy processed by high-pressure torsion and thermal treated
This work aims at evaluating the effect of microstructure on the corrosion behavior of an Al–Mg–Sc alloy processed by high-pressure torsion (HPT) and annealed from 523 to 773 K. The corrosion resistance of the annealed alloy was evaluated by using electrochemical impedance spectroscopy (EIS) and pot...
| Main Authors: | , , , , |
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| Format: | Article |
| Language: | English |
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Elsevier
2022-05-01
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| Series: | Journal of Materials Research and Technology |
| Subjects: | |
| Online Access: | http://www.sciencedirect.com/science/article/pii/S2238785422003611 |
| _version_ | 1828287153936793600 |
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| author | Michelle Dias Alves Lage Mariana Duarte de Oliveira Pedro Henrique Rodrigues Pereira Roberto Braga Figueiredo Vanessa Freitas Cunha Lins |
| author_facet | Michelle Dias Alves Lage Mariana Duarte de Oliveira Pedro Henrique Rodrigues Pereira Roberto Braga Figueiredo Vanessa Freitas Cunha Lins |
| author_sort | Michelle Dias Alves Lage |
| collection | DOAJ |
| description | This work aims at evaluating the effect of microstructure on the corrosion behavior of an Al–Mg–Sc alloy processed by high-pressure torsion (HPT) and annealed from 523 to 773 K. The corrosion resistance of the annealed alloy was evaluated by using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization tests in 3.5% (wt.%) NaCl solution. The EIS and polarization analyses suggested a higher corrosion resistance of the Al–Mg–Sc alloy that presented a more homogeneous grain distribution. The Al alloy samples were characterized by scanning electron microscopy (SEM) after the polarization tests. The heterogeneity of the microstructure, but also the formation of a high density of grain boundaries during HPT processing, and a change in the structure of grain boundaries, including the formation of grain boundary segregations of alloying elements, affected the corrosion behavior of the HPT processed and thermal annealed Al–Mg–Sc alloy. |
| first_indexed | 2024-04-13T09:44:47Z |
| format | Article |
| id | doaj.art-6d3ccf2b138547f99aa1596436543fc1 |
| institution | Directory Open Access Journal |
| issn | 2238-7854 |
| language | English |
| last_indexed | 2024-04-13T09:44:47Z |
| publishDate | 2022-05-01 |
| publisher | Elsevier |
| record_format | Article |
| series | Journal of Materials Research and Technology |
| spelling | doaj.art-6d3ccf2b138547f99aa1596436543fc12022-12-22T02:51:49ZengElsevierJournal of Materials Research and Technology2238-78542022-05-011827452753Corrosion behavior of Al–3Mg–0.2Sc alloy processed by high-pressure torsion and thermal treatedMichelle Dias Alves Lage0Mariana Duarte de Oliveira1Pedro Henrique Rodrigues Pereira2Roberto Braga Figueiredo3Vanessa Freitas Cunha Lins4Departamento de Engenharia Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BrazilDepartamento de Engenharia Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BrazilDepartamento de Engenharia Metalúrgica e de Materiais, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Materials Research Group, Department of Mechanical Engineering, University of Southampton, Southampton SO17 1BJ, UKDepartamento de Engenharia Metalúrgica e de Materiais, Universidade Federal de Minas Gerais, Belo Horizonte, MG, BrazilDepartamento de Engenharia Química, Universidade Federal de Minas Gerais, Belo Horizonte, MG, Brazil; Corresponding author.This work aims at evaluating the effect of microstructure on the corrosion behavior of an Al–Mg–Sc alloy processed by high-pressure torsion (HPT) and annealed from 523 to 773 K. The corrosion resistance of the annealed alloy was evaluated by using electrochemical impedance spectroscopy (EIS) and potentiodynamic polarization tests in 3.5% (wt.%) NaCl solution. The EIS and polarization analyses suggested a higher corrosion resistance of the Al–Mg–Sc alloy that presented a more homogeneous grain distribution. The Al alloy samples were characterized by scanning electron microscopy (SEM) after the polarization tests. The heterogeneity of the microstructure, but also the formation of a high density of grain boundaries during HPT processing, and a change in the structure of grain boundaries, including the formation of grain boundary segregations of alloying elements, affected the corrosion behavior of the HPT processed and thermal annealed Al–Mg–Sc alloy.http://www.sciencedirect.com/science/article/pii/S2238785422003611Aluminum alloyCorrosionHigh-pressure torsionUltrafine microstructureGrain distribution |
| spellingShingle | Michelle Dias Alves Lage Mariana Duarte de Oliveira Pedro Henrique Rodrigues Pereira Roberto Braga Figueiredo Vanessa Freitas Cunha Lins Corrosion behavior of Al–3Mg–0.2Sc alloy processed by high-pressure torsion and thermal treated Journal of Materials Research and Technology Aluminum alloy Corrosion High-pressure torsion Ultrafine microstructure Grain distribution |
| title | Corrosion behavior of Al–3Mg–0.2Sc alloy processed by high-pressure torsion and thermal treated |
| title_full | Corrosion behavior of Al–3Mg–0.2Sc alloy processed by high-pressure torsion and thermal treated |
| title_fullStr | Corrosion behavior of Al–3Mg–0.2Sc alloy processed by high-pressure torsion and thermal treated |
| title_full_unstemmed | Corrosion behavior of Al–3Mg–0.2Sc alloy processed by high-pressure torsion and thermal treated |
| title_short | Corrosion behavior of Al–3Mg–0.2Sc alloy processed by high-pressure torsion and thermal treated |
| title_sort | corrosion behavior of al 3mg 0 2sc alloy processed by high pressure torsion and thermal treated |
| topic | Aluminum alloy Corrosion High-pressure torsion Ultrafine microstructure Grain distribution |
| url | http://www.sciencedirect.com/science/article/pii/S2238785422003611 |
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