Observations of intergranular corrosion in AA2024-T351: The influence of grain stored energy

C. Luo, X. Zhou, G. E. Thompson, A. E. Hughes

    Research output: Contribution to journalArticlepeer-review

    Abstract

    Aluminium alloy 2024-T351 was examined using a range of electron microscope techniques at the early stages of attack after immersion in 0.1. M NaCl aqueous solution. At attack sites, a significant portion of the intergranular network was attacked, even though only 15% of the boundaries were decorated by second phase particles (θ-phase). Structure of the grains and the grain boundaries, including grain misorientation angle and grain stored energy, based on dislocation density, were probed further. A strong correlation of intergranular attack around grains with higher grain stored energy and therefore high dislocation density was revealed. © 2012.
    Original languageEnglish
    Pages (from-to)35-44
    Number of pages9
    JournalCorrosion Science
    Volume61
    DOIs
    Publication statusPublished - Aug 2012

    Keywords

    • A. Alloy
    • A. Aluminium
    • B. TEM
    • C. Anodic dissolution
    • C. Intergranular corrosion
    • C. Pitting corrosion

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