A Relationship between Glass-Forming Ability and Reduced Glass Transition Temperature near Eutectic Composition

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  • Li Y.
    Department of Materials Science, Science Faculty, National University of Singapore

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  • Relationship between Glass Forming Ability and Reduced Glass Transition Temperature near Eutectic Composition

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Abstract

Onset temperature (solidus), Tm and offset temperature (liquidus) Tl of melting of a series of bulk glass forming alloys based on Zr, La, Mg, Pd and rare-earth elements have been measured by studying systematically the melting behaviour of these alloys using differential thermal analysis (DTA) or differential scanning calorimetry (DSC). Bulk metallic glass formation has been found to be most effective at or near their eutectic points and less effective for off-eutectic alloys. Reduced glass transition temperature Trg given by Tg⁄Tl is found to show a stronger correlation with critical cooling rate or critical section thickness for glass formation than Trg given by Tg⁄Tm.

Journal

  • MATERIALS TRANSACTIONS

    MATERIALS TRANSACTIONS 42 (4), 556-561, 2001

    The Japan Institute of Metals and Materials

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