Investigation of viscosity and crystallization in supercooled-liquid region of Zr-based glassy alloys

Yan Li, Ran Li, Shujie Pang, Bingqing Chen, Konstantinos Georgarakis, Alain Le Moulec, Gavin Vaughan, Tao Zhang, Alain R. Yavari

    Research output: Contribution to journalArticle

    5 Citations (Scopus)

    Abstract

    Using viscosity measurement method and in-situ heating synchrotron radiation, the viscosity of the (Zr0.55Al0.1Ni 0.05Cu0.3)100 - xYx (x = 0, 0.5, 1, 2) bulk metallic glasses (BMGs) in their supercooled liquid regions (SLRs) and the in-situ heating nucleation were investigated, respectively. In the SLR, the (Zr0.55Al0.1Ni0.05Cu0.3) 99Y1 metallic glass which shows distinct plastic strain in compression exhibits higher viscosity than the other three BMGs, however their Poisson's ratios are almost the same. The synchrotron diffraction results show that crystallization happened in the SLR of the (Zr0.55Al 0.1Ni0.05Cu0.3)99Y1 glassy alloy, which could be the reason for the higher viscosity and larger plastic strain in compression compared to the other three alloys. The fracture surfaces of the glassy alloys were observed and analyzed.

    Original languageEnglish
    Pages (from-to)150-154
    Number of pages5
    JournalJournal of Non-Crystalline Solids
    Volume358
    Issue number2
    DOIs
    Publication statusPublished - 2012 Jan 15

    Keywords

    • Bulk metallic glass
    • Poisson's ratio
    • Synchrotron
    • Viscosity

    ASJC Scopus subject areas

    • Electronic, Optical and Magnetic Materials
    • Ceramics and Composites
    • Condensed Matter Physics
    • Materials Chemistry

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  • Cite this

    Li, Y., Li, R., Pang, S., Chen, B., Georgarakis, K., Le Moulec, A., Vaughan, G., Zhang, T., & Yavari, A. R. (2012). Investigation of viscosity and crystallization in supercooled-liquid region of Zr-based glassy alloys. Journal of Non-Crystalline Solids, 358(2), 150-154. https://doi.org/10.1016/j.jnoncrysol.2011.08.031