Corrosion Behavior of AA6012 Aluminum Alloy Processed by ECAP and Cryogenic Treatment
| Autor: | Marcello Cabibbo, G. Roventi, Annamaria Viceré, Tiziano Bellezze, Chiara Paoletti |
|---|---|
| Jazyk: | angličtina |
| Rok vydání: | 2019 |
| Předmět: |
lcsh:TN1-997
Materials science 020209 energy Alloy chemistry.chemical_element 02 engineering and technology engineering.material Corrosion Aluminium 0202 electrical engineering electronic engineering information engineering General Materials Science lcsh:Mining engineering. Metallurgy Tafel equation aluminum alloys ECAP Tafel polarization tests Metallurgy Metals and Alloys 021001 nanoscience & nanotechnology Microstructure Dielectric spectroscopy electrochemical impedance spectroscopy chemistry engineering Cryogenic treatment cryogenic treatment Severe plastic deformation 0210 nano-technology |
| Zdroj: | Metals Volume 9 Issue 4 Metals, Vol 9, Iss 4, p 408 (2019) |
| ISSN: | 2075-4701 |
| DOI: | 10.3390/met9040408 |
| Popis: | In this work, the corrosion behavior of an AA6012 aluminum alloy, submitted to a T6 strengthening treatment (solubilization and aging), and later to a severe plastic deformation, through equal channel angular pressing (ECAP) was studied. Some of these samples were submitted to a cryogenic treatment before the ECAP process. The analysis of corrosion behavior of the AA6012 samples was carried out at room temperature by means of electrochemical characterization in 0.1 M Cl&minus deaerated and aerated solution at pH 2. For this purpose, Tafel plots and electrochemical impedance spectroscopy tests were performed. The evolution of the microstructure was studied by means of SEM and TEM observations. The experimental results show that the cryogenic treatment does not influence the corrosion behavior of the studied alloy submitted to T6 treatment. Moreover, it was found that the ECAP technique does not induce a marked deterioration of the analyzed samples in terms of corrosion resistance. |
| Databáze: | OpenAIRE |
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