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Effect of varying conditions of exposure to an aggressive medium on the corrosion behavior of the 2050 Al--Cu--Li alloy

Guérin, Mathilde and Andrieu, Eric and Odemer, Grégory and Alexis, Joël and Blanc, Christine Effect of varying conditions of exposure to an aggressive medium on the corrosion behavior of the 2050 Al--Cu--Li alloy. (2014) Corrosion Science, 85. 455-470. ISSN 0010-938X

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Official URL: http://dx.doi.org/10.1016/j.corsci.2014.04.042

Abstract

The corrosion behavior of aluminum alloy 2050 was studied as a function of varying conditions of exposure to an aqueous NaCl solution. Two metallurgical states were considered, i.e., an as-received alloy (NHT) and aged samples (HT). After continuous immersion tests, the NHT samples were susceptible to intergranular corrosion, whereas intragranular corrosion was observed for the HT samples. For the NHT samples, cyclic corrosion tests, with alternate immersion – emersion periods, induced subgrain boundary dissolution, and for the HT samples, grain and/or subgrain boundary sensibilization was induced. Hydrogen content measurements suggested a hydrogen enrichment of the alloy under cyclic corrosion tests.

Item Type:Article
Additional Information:Thanks to Elsevier editor. The definitive version is available at http://www.sciencedirect.com/science/article/pii/S0010938X14002133
HAL Id:hal-01024706
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)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UPS (FRANCE)
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Deposited By: Joël ALEXIS
Deposited On:16 Jul 2014 13:46

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