Local atomic structure of Zr-Cu and Zr-Cu-Al amorphous alloys investigated by EXAFS method

J. Antonowicz, A. Pietnoczka, W. Zalewski, R. Bacewicz, M. Stoica, K. Georgarakis, A. R. Yavari

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    16 Citations (Scopus)

    Abstract

    We report on extended X-ray absorption fine structure (EXAFS) study of rapidly quenched Zr-Cu and Zr-Cu-Al glassy alloys. The local atomic order around Zr and Cu atoms was investigated. From the EXAFS data fitting the values of coordination number, interatomic distances and mean square atomic displacement were obtained for wide range of compositions. It was found that icosahedral symmetry rather than that of corresponding crystalline analogs dominates in the local atomic structure of Zr-Cu and Zr-Cu-Al amorphous alloys. Judging from bonding preferences we conclude that addition of Al as an alloying element results in considerable deviation from random mixing behavior observed in binary Zr-Cu alloys.

    Original languageEnglish
    JournalJournal of Alloys and Compounds
    Volume509
    Issue numberSUPPL. 1
    DOIs
    Publication statusPublished - 2011 Jul 14

    Keywords

    • Amorphous materials
    • Atomic scale structure
    • EXAFS
    • Metallic glasses

    ASJC Scopus subject areas

    • Mechanics of Materials
    • Mechanical Engineering
    • Metals and Alloys
    • Materials Chemistry

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    Antonowicz, J., Pietnoczka, A., Zalewski, W., Bacewicz, R., Stoica, M., Georgarakis, K., & Yavari, A. R. (2011). Local atomic structure of Zr-Cu and Zr-Cu-Al amorphous alloys investigated by EXAFS method. Journal of Alloys and Compounds, 509(SUPPL. 1). https://doi.org/10.1016/j.jallcom.2010.10.105