Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1472216 | Corrosion Science | 2005 | 15 Pages |
Abstract
We investigated the role of second phases in the stress corrosion cracking of a complex copper–aluminium alloy CuAl9Ni3Fe2. We conducted slow strain rate tensile tests in synthetic sea water. Cracking is mainly intergranular. The crack path is determined by the electrochemical interactions between the α matrix and the second phases. We observe the selective dissolution of the aluminium rich areas that are anodic with respect to the α matrix. Under cathodic polarisation, the detrimental effect on mechanical properties is enhanced. The number of cracks is reduced. Crack blunting by dissolution is impeded.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
Stéphanie Fonlupt, Bernard Bayle, David Delafosse, Jean-Loup Heuze,