Bonfils-Lahovary, Marie-Laëtitia de
and Josse, Claudie and Laffont, Lydia and Blanc, Christine
Influence of hydrogen on the propagation of intergranular corrosion defects in 2024 aluminium alloy.
(2019)
Corrosion Science, 148. 198-205. ISSN 0010-938X
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(Document in English)
PDF (Author's version) - Requires a PDF viewer such as GSview, Xpdf or Adobe Acrobat Reader 1MB |
Official URL: https://doi.org/10.1016/j.corsci.2018.12.019
Abstract
To study the influence of hydrogen on the intergranular corrosion mechanism of a 2024 aluminium alloy, samples were hydrogen precharged by cathodic polarisation and then exposed to a NaCl solution. EBSD analyses and SEM observations showed that hydrogen increased the number of corroded interfaces and led to the embrittlement of low-angle grain boundaries which were not susceptible to corrosion without hydrogen precharging. The increase of the reactivity of the 2024 aluminium alloy in the presence of hydrogen gave a new insight into the intergranular corrosion mechanism: corrosion-induced hydrogen promoted the intergranular corrosion propagation and partially controlled the corrosion defect morphology.
| Item Type: | Article |
|---|---|
| HAL Id: | hal-02135687 |
| Audience (journal): | International peer-reviewed journal |
| Uncontrolled Keywords: | |
| Institution: | French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE) Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE) Université de Toulouse > Institut National des Sciences Appliquées de Toulouse - INSA (FRANCE) Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE) |
| Laboratory name: | |
| Statistics: | download |
| Deposited On: | 08 Feb 2019 17:03 |
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