Gas accumulation at grain boundaries during 800 MeV proton irradiation of aluminium and aluminium-alloys

Bachu Narain Singh, Andy Horsewell, W. F. Sommer, W. Lohmann

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Samples of pure aluminium (99.9999%) and commercial Al-2.7%Mg(AlMg3) and Al-1.1%Mg-0.5%Si(Al6061) alloys were irradiated with 800 MeV protons at the Los Alamos Meson Physics Facility (LAMPF) at a temperature between 40-100°C to a maximum dose of 0.2 dpa. Transmission electron microscopy (TEM) showed a complete absence of voids or bubbles in the grain interiors of the aluminium and the aluminium-alloys. Bubbles were clearly visible by TEM at grain boundaries in pure Al and the AlMg3 alloy; but bubbles were not visible in the Al6061 alloy. The bubble density in the AlMg3 alloy was considerably higher than in the pure Al. The amount of gas accumulation at grain boundaries was found to depend on gas generation rate, alloying and cold-work microstructure
    Original languageEnglish
    JournalJournal of Nuclear Materials
    Volume141-143
    Pages (from-to)718-722
    ISSN0022-3115
    DOIs
    Publication statusPublished - 1986

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