The corrosion behaviour (intergranular corrosion, exfoliation and SCC) of alloy 2050 (AlCuLi) has been evaluated as a function of tempering and compared with some 2xxx Li free alloys. They show a similar qualitative behaviour: sensitivity to corrosion in underaged conditions, desensitization near peak age and re-sensitization in overaged conditions. The desentization can be rationalized on the basis of microstructural investigations and electrochemical measurements: preferential dissolution in underaged conditions is attributed to a Cu depleted zone near grain boundary. The re-sensitization in an overaged temper needs further investigations.
CITATION STYLE
Henon, C., & Rouault, S. (2012). Comparison of corrosion performance and mechanisms of Al-Cu alloys with and without Li addition. In ICAA13 Pittsburgh (pp. 431–436). Springer International Publishing. https://doi.org/10.1007/978-3-319-48761-8_63
Mendeley helps you to discover research relevant for your work.