期刊
CORROSION SCIENCE
卷 73, 期 -, 页码 130-142出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2013.04.001
关键词
Aluminium; Alloy; Polarisation; TEM; Intergranular corrosion; Welding
资金
- ANR MatetPro program [ANR-08-MAPR-0020-05]
- Agence Nationale de la Recherche (ANR) [ANR-08-MAPR-0020] Funding Source: Agence Nationale de la Recherche (ANR)
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. (C) 2013 Elsevier Ltd. All rights reserved.
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