Characterisation and understanding of the corrosion behaviour of the nugget in a 2050 aluminium alloy Friction Stir Welding joint - Archive ouverte HAL Access content directly
Journal Articles Corrosion Science Year : 2013

Characterisation and understanding of the corrosion behaviour of the nugget in a 2050 aluminium alloy Friction Stir Welding joint

Abstract

The corrosion behaviour of the nugget of a Friction Stir Welding joint employing a 2050 Al-Cu-Li alloy was investigated. The results showed that the nugget was susceptible to both intergranular and intragranular corrosion. Such corrosion behaviour was related to microstructural heterogeneities observed on a microscopic scale. Furthermore, heterogeneities in the corrosion behaviour of the nugget observed on a macroscopic scale were evidenced by a different corrosion behaviour from the top to the bottom of the nugget and by a localisation of the corrosion damage related to the ''Onion ring structure''. Critical microstructural parameters were identified to explain the results.

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Materials
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Dates and versions

hal-00932432 , version 1 (17-01-2014)

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Vincent Proton, Joël Alexis, Eric Andrieu, Jérôme Delfosse, Marie-Christine Lafont, et al.. Characterisation and understanding of the corrosion behaviour of the nugget in a 2050 aluminium alloy Friction Stir Welding joint. Corrosion Science, 2013, vol. 73, pp. 130-142. ⟨10.1016/j.corsci.2013.04.001⟩. ⟨hal-00932432⟩
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