In the present work, the thermal analysis of the bulk metallic glass with composition Zr 52 Cu 18 Ni 14 Al 10 Ti 6 has been done by differential scanning calorimetry (DSC) through non-isothermal method. DSC curves indicate a twostep crystallization process at all four heating rates, i.e., 5, 10, 15, and 20°C min -1 . Non-isothermal crystallization studies of the alloy indicate that kinetics conform to Johnson-MehlAvrami (JMA) model. The master plot method and normalized heat flow curve prove the validity of JMA model. Analysis of the second crystallization event has been done by using various isoconversional and isokinetic methods available in the literature. Activation energy of crystallization increases, whereas the value of Avrami exponent decreases, with increase in crystallized fraction. The fitting curve using Lasocka's empirical relation shows that the influence of the heating rate for secondary crystallization event is larger than the primary crystallization event.

The variation of onset of crystallization temperature (Tx) and peak crystallization temperature (Tp) with heating rate (q) is studied. Tx and Tp vary in a power law behavior with heating rate (q) for Cu60 Zr20Ti20 metallic glass and these parameters show a linear variation for Cu60Zr40 metallic glass. The power law variation is expressed as Tx (or Tp) = T0 [q]y; where, q is the normalized heating rate, T0 is the Tx (or Tp) at a heating rate of 10Cmin-1. Further, the calculated values of Tx (or Tp) are found to be in good agreement with the experimental results. Hence, the power law relation is found to be an appropriate theoretical expression for the variation of crystallization temperature (Tx or Tp) with heating rate (q) for Cu60 Zr20Ti20 metallic glass. In addition to heating rate, the composition of a metallic glass also affects its crystallization temperature. It is observed that the characteristics temperatures shift towards higher values with increase in number of components.

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