By means of the enthalpy recovery experiments in a Zr65Al7.5Cu27.5 metallic glass, the glass transition process was found to correlate with an obvious variation of enthalpy change with the annealing temperature. With this correlation, we developed an approach to determine the pressure effect on the glass transition temperature (T-g), and a drastic increment of T-g up to 50 K was observed in this glass when a hydrostatic pressure of 5 GPa was applied. It is much smaller than that observed in nonmetallic glasses, which is attributed to smaller activation volume of the relaxation in metallic glasses. (C) 2003 American Institute of Physics.
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chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china. chinese acad sci, inst phys, beijing 100080, peoples r china.;lu, k (reprint author), chinese acad sci, inst met res, shenyang natl lab mat sci, shenyang 110016, peoples r china
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