Comparative studies of crystallization of a bulk Zr-Al-Ti-Cu-Ni amorphous alloy

T. G. Nieh, C. Iwamoto, Yuichi Ikuhara, K. W. Lee, Y. W. Chung

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    20 Citations (Scopus)

    Abstract

    The recrystallization and associated nanoindentation behavior of a Zr-10Al-5Ti-17.9Cu-14.6Ni (at.%) bulk amorphous alloy was investigated using in situ transmission electron microscopy and high-temperature nanoindentation. The onset of recrystallization occurs around 710 K, with the formation of Zr 2Cu, Al3Zr4, and Ni10Zr7. Nanoindentation hardness and elastic modulus were obtained as a function of temperature from 298 to 723 K. The hardness was measured to be ∼7.5 GPa and found unchanged at temperatures below 673 K, but softened rapidly and decreased to 5 GPa at 723 K. These results can be correlated very well with the onset of recrystallization of this alloy at ∼700 K. The present study demonstrates that transmission electron microscopy, hot-stage nanoindentation, and X-ray diffraction are supplementary techniques for the study of glass relaxation and crystallization of metallic glasses.

    Original languageEnglish
    Pages (from-to)1183-1189
    Number of pages7
    JournalIntermetallics
    Volume12
    Issue number10-11 SPEC. ISS.
    DOIs
    Publication statusPublished - 2004 Oct 1

    Keywords

    • B. Glasses, metallic
    • B. Mechanical properties at high temperatures
    • B. Phase identification
    • C. Recrystallization and recovery (including grain growth)
    • F. Electron microscopy, transmission

    ASJC Scopus subject areas

    • Metals and Alloys

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  • Cite this

    Nieh, T. G., Iwamoto, C., Ikuhara, Y., Lee, K. W., & Chung, Y. W. (2004). Comparative studies of crystallization of a bulk Zr-Al-Ti-Cu-Ni amorphous alloy. Intermetallics, 12(10-11 SPEC. ISS.), 1183-1189. https://doi.org/10.1016/j.intermet.2004.04.011