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Identification of the metallurgical parameters explaining the corrosion susceptibility in a 2050 aluminium alloy

Guérin, Mathilde and Alexis, Joël and Andrieu, Eric and Laffont-Dantras, Lydia and Lefebvre, Williams and Odemer, Grégory and Blanc, Christine Identification of the metallurgical parameters explaining the corrosion susceptibility in a 2050 aluminium alloy. (2016) Corrosion Science, 102. 291-300. ISSN 0010-938X

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Official URL: http://dx.doi.org/10.1016/j.corsci.2015.10.020

Abstract

The corrosion behaviour of a 2050 aluminium alloy was studied in a NaCl solution. The structure ofprecipitation did not fully explain the susceptibility to intergranular (in the -T34 state) and intragran-ular corrosion for the aged state (the -T8 state). A relationship between the nature of interfaces, thegrains characteristics (size, internal misorientation and orientation according to the plane exposed tothe electrolyte) on one hand and the corrosion susceptibility of the alloy on the other hand was clearlyestablished. Galvanic coupling between grains with different internal misorientations helped to explainthe intergranular corrosion susceptibility of the -T34 state.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com The original PDF of the article can be found at Corrosion Science website : http://www.sciencedirect.com/science/article/pii/S0010938X15301207
HAL Id:hal-01264384
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 - INPT (FRANCE)
Other partners > Institut National des Sciences Appliquées de Rouen - INSA (FRANCE)
Other partners > Université de Rouen - UR (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Joël ALEXIS
Deposited On:25 Jan 2016 10:37

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