The crystallization kinetics of the Cu43Zr43Al7Ag7 (at.%) amorphous alloy was studied by means of differential scanning calorimetry (DSC) in the continuous heating and isothermal annealing modes. In the case of continuous heating, the activation energy for crystallization corresponding to the first exothermal peak was significantly lower than that of the second peak. The isothermal kinetic, analyzed using the Johnson-Mehl-Avrami equation, yielded values of the Avrami exponents in the range 1.74-2.64, which implied that the first crystallization was governed by a three-dimensional diffusion-controlled growth.
Bibliographical noteFunding Information:
This research was supported by a grant (code#: 05K1501-00410) from ‘Center for Nanostructured Materials Technology’ under ‘21st Century Frontier R&D Program’ of the Korea Ministry of Science and Technology.
Copyright 2018 Elsevier B.V., All rights reserved.
- Amorphous alloy
- Phase separation
ASJC Scopus subject areas
- General Materials Science
- Condensed Matter Physics
- Mechanics of Materials
- Mechanical Engineering