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Journal Articles Corrosion Science Year : 2005

Role of second phases in the stress corrosion cracking of a nickel–aluminium bronze in saline water

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.

Dates and versions

emse-00505844 , version 1 (26-07-2010)

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Stéphanie Fonlupt, Bernard Bayle, David Delafosse, Jean-Loup Heuze. Role of second phases in the stress corrosion cracking of a nickel–aluminium bronze in saline water. Corrosion Science, 2005, 47 (11), pp.2792-2806. ⟨10.1016/j.corsci.2004.09.025⟩. ⟨emse-00505844⟩
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