Free-volume evolution and its temperature dependence during rolling of Cu60Zr20Ti20 bulk metallic glass

Q.P. Cao, J.F. Li, Y.H. Zhou, Andy Horsewell, J.Z. Jiang

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    Abstract

    The free-volume evolution during rolling Cu60Zr20Ti20 bulk metallic glass at room and cryogenic temperatures has been investigated by differential scanning calorimetry. When the specimen is rolled at cryogenic temperature, the free-volume content increases as the rolling proceeds first, and then saturates accompanied by the occurrence of phase separation as the thickness reduction exceeds 89%. If the rolling is performed at room temperature, although the free-volume content also rises in the earlier stage, it tends to decrease rather than saturate when the thickness reduction exceeds 87%, accompanied by partial crystallization. Phase separation does not change the annihilation rate of free volume, while the appearance of crystal/amorphous boundaries can enhance the annihilation.
    Original languageEnglish
    JournalApplied Physics Letters
    Volume87
    Issue number10
    Pages (from-to)101901
    ISSN0003-6951
    DOIs
    Publication statusPublished - 2005

    Bibliographical note

    Copyright (2005) American Institute of Physics. This article may be downloaded for personal use only. Any other use requires prior permission of the author and the American Institute of Physics.

    Keywords

    • LOCALIZATION
    • FLOW
    • DEFORMATION
    • ALLOYS
    • SHEAR BANDS

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