Stress corrosion cracking behaviour of conventional and innovative aluminium alloys for aeronautic applications


Correspondence to: Astarita, Antonello, Department of Materials and Production Engineering of University of Naples Federico II, P.le Tecchio 80, 80125 Naples, Campania, Italy.



In this work, the stress corrosion cracking (SCC) behaviour of both innovative and conventional friction stir welded aluminium alloys was investigated. Similar butt joints were realized and tested; in particular, four different alloys for aeronautic applications were studied: AA2024 T3, AA2139 T3, AA2198 T3 and AA6056 T4. SCC tests were carried out following the international standards using a dedicated machine designed following as prescribed by the standards. The results showed that all the joints passed the tests, but pitting and generalized corrosion happens on all the specimens tested. Furthermore, an influence of the applied load on the corrosion behaviour was observed. Copyright © 2013 John Wiley & Sons, Ltd.