Melting and solidification of bismuth inclusions in aluminium

N.B. Thoft, J. Bohr, B. Buras, E. Johnson, A. Johansen, H.H. Andersen, I. Sarholt-Kristensen

    Research output: Contribution to journalJournal articleResearchpeer-review

    Abstract

    Supercooling of crystalline bismuth inclusions in aluminium crystals has been observed and studied with different techniques: x-ray diffraction, in situ Rutherford backscattering/channelling spectrometry and transmission electron microscopy. The results of the measurements with different experimental methods (and on different samples) agree remarkably well. The inclusions melt at temperatures at or below the bismuth bulk melting point, and the solid/liquid phase transition exhibits a hysteresis of 100-150 K. Average inclusion sizes ranged from a few nm to some tens of nm. The x-ray diffraction melting data are discussed in relation to different existing models for the melting temperature of an inclusion as a function of its size. From this an approximate size distribution for the inclusions is derived.
    Original languageEnglish
    JournalJournal of Physics D: Applied Physics
    Volume28
    Issue number3
    Pages (from-to)539-548
    ISSN0022-3727
    DOIs
    Publication statusPublished - 1995

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