Glass formation in the Nb-Si binary system

K. Georgarakis, Y. Li, M. Aljerf, D. Dudina, A. LeMoulec, A. R. Yavari, G. Vaughan, A. Inoue

    Research output: Contribution to journalArticlepeer-review

    3 Citations (Scopus)

    Abstract

    Nb81.3Si18.7 ribbons were prepared by rapid quenching of the liquid on a rotating copper wheel using various values of rotating speed. It was found that the melt spun ribbons consisted of an amorphous matrix; however the critical cooling rate for the formation of fully amorphous ribbons was achieved at rather high values of wheel speed. Crystallization occurs upon annealing above 971 K. The Vickers hardness of the amorphous ribbons was found to be 915 HV, an unusually high value for a binary alloy. The atomic structure of the amorphous Nb-Si alloy was studied using real space pair distribution (PDF)/radial distribution functions (RDF) derived from high precision X-ray diffraction data acquired with high-energy, monochromatic synchrotron light in transmission.

    Original languageEnglish
    JournalJournal of Alloys and Compounds
    Volume504
    Issue numberSUPPL. 1
    DOIs
    Publication statusPublished - 2010 Aug 1

    Keywords

    • Amorphous materials
    • Crystallization
    • Metallic glasses
    • Metals and alloys
    • Rapid quenching
    • X-ray diffraction

    ASJC Scopus subject areas

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

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