Journal
CORROSION SCIENCE
Volume 116, Issue -, Pages 98-109Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.corsci.2016.12.006
Keywords
Aluminium; Alloy; Oxidation; De-alloying; Interfaces; Effects of strain
Funding
- Deakin Advanced Characterisation Facility
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High-strength aluminium alloys such as AA2024-T3 are often developed by the introduction of plastic deformation to a precipitate containing microstructure. These alloys contain complex, near-surface nanostructures whose effects on localised corrosion processes have not been well understood due primarily to the difficulty of characterising these heterogeneous compositions and structures. In this work, we observed entangled oxide networks co-located with dislocation structures piled up at corroded inter metallic particles of an AA2024-T3 alloy. It was revealed that dislocation arrays act as pathways for corrosive species and promote structural degradation at interfacial regions, providing a new insight into corrosion initiation at the nano-scale. (C) 2016 Elsevier Ltd. All rights reserved.
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