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Probing corrosion initiation at interfacial nanostructures of AA2024-T3

journal contribution
posted on 15.02.2017, 00:00 authored by Reza Parvizi, A E Hughes, Mike Yongjun TanMike Yongjun Tan, Ross MarceauRoss Marceau, Maria ForsythMaria Forsyth, Pavel CizekPavel Cizek, A M Glenn
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 intermetallic 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.

History

Journal

Corrosion science

Volume

116

Pagination

98 - 109

Publisher

Elsevier

Location

Amsterdam, The Netherlands

ISSN

0010-938X

eISSN

1879-0496

Language

eng

Publication classification

C Journal article; C1 Refereed article in a scholarly journal

Copyright notice

2016, Elsevier