Journal
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
Volume 375, Issue -, Pages 351-354Publisher
ELSEVIER SCIENCE SA
DOI: 10.1016/j.msea.2003.10.125
Keywords
bulk metallic glasses; glass transition; supercooled liquid
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The thermal behaviour of Zr-based bulk metallic glasses has been investigated in situ through the glass transition by means of differential scanning calorimetry, high temperature X-ray synchrotron diffraction, electrical resistivity, and dilatometry. The temperature dependence of the X-ray structure factor can be well described by the Debye theory. The Debye temperature of the glassy and the supercooled liquid state Of Zr52Ti5Cu18Ni15Al10 is theta = 412 and theta = 162 K, respectively. The temperature coefficient of the electrical resistivity and the thermal expansion coefficient change also at the calorimetric glass transition temperature. The results point to a significant changes in the dynamics of molecular motion at T-g. (C) 2003 Elsevier B.V. All rights reserved.
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