A closer look at constituent induced localised corrosion in Al-Cu-Mg alloys

N. Birbilis, Y.M. Zhu, S.K. Kairy, MA Glenn, J.F. Nie, A.J. Morton, Yaiza Gonzalez Garcia, Herman Terryn, Arjan Mol, A.E. Hughes

    Research output: Contribution to journalArticleScientificpeer-review

    37 Citations (Scopus)

    Abstract

    The role of constituent intermetallic particles in the pitting corrosion of aluminium (Al) alloys is well recognised. A definitive quantification of the role of unique constituent particles has contributed towards an enhanced understanding of Al-alloy corrosion, however the complexity of Al-alloy microstructures warrants further attention. In the present work we identify a unique intermetallic type in contemporary versions of AA2024-T3, which has a two-phase structure, defined by two distinct crystal types, and distinct compositions. Detailed characterisation is used to unambiguously define this constituent, along with its role in localised corrosion.
    Original languageEnglish
    Pages (from-to)160-171
    JournalCorrosion Science: the journal on environmental degradation of materials and its control
    Volume113
    DOIs
    Publication statusPublished - 2016

    Keywords

    • A: aluminium
    • A: intermetallics
    • B: TEM
    • B: STEM
    • C: pitting corrosion
    • AA2024

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