Abstract
In this paper, the crystallization kinetics of melt-spun Cu50Zr50 amorphous alloy ribbons has been investigated using differential scanning calorimetry. Moreover, the Kissinger, Ozawa and isoconversional approaches have been used to obtain the crystallization kinetic parameters. As shown in the results, the onset crystallization activation energy E x is less than crystallization peak activation energy E p. The local activation energy E α increases at the crystallized volume fraction α 0.2). The nucleation activation energy E nucleation is greater than grain growth activation energy E growth, indicating that the nucleation is harder than growth. In terms of the local Avrami exponent n(α), it lies between 1.27 and 8, which means that crystallization mechanism in the non-isothermal crystallization is interface-controlled one- two- or three-dimensional growth with different nucleation rates.
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