Pre-precipitate clustering in aged aluminium alloys

K. Hono, T. Sakurai, I. J. Polmear

    Research output: Contribution to journalConference articlepeer-review

    1 Citation (Scopus)

    Abstract

    Although a generalised thermodynamic description of precipitate nucleation in alloys has been available for many years, the actual atomic processes that are involved have remained largely unknown. This situation is now changing, however, through the combined use of high resolution transmission electron microscopy and atom probe field ion microscopy. Details are given of the application of these techniques to the study of nucleation processes in alloys based on the Al-Cu-Mg and Al-Mg-Si systems that have been quenched and aged at elevated temperatures, and in which clustering of different atom species has been detected. Special attention is paid to the Al-Cu-Mg-Ag system in which an increased understanding has been obtained of the role of silver in stimulating nucleation of the Ω phase.

    Original languageEnglish
    Pages (from-to)249-254
    Number of pages6
    JournalMaterials Science Forum
    Volume189-190
    DOIs
    Publication statusPublished - 1995
    EventProceedings of the 2nd International Conference on the Role of Interfaces in Advanced Materials Design, Processing and Performance - Ballarat, Aust
    Duration: 1993 Nov 11993 Nov 5

    ASJC Scopus subject areas

    • Materials Science(all)
    • Condensed Matter Physics
    • Mechanics of Materials
    • Mechanical Engineering

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