Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
7903461 | Journal of Non-Crystalline Solids | 2013 | 4 Pages |
Abstract
We study structure and crystallization kinetics of melt-spun Al86Ni8Gd6 amorphous alloy. The X-ray diffraction and transmission electron microscopy detect pronounced nanoscale clusters in the structure of the amorphous state. Differential scanning calorimetry analysis shows complex three-stage crystallization of the amorphous alloy at different heating rates. The high temperature X-ray diffraction analysis reveals crystallization mechanism with competing reactions of intermetallic compounds formation. Summarizing the experimental data, we introduce multiversion non-linear kinetic model that describes the crystallization process completely and allows us to determine kinetic parameters with high accuracy. The activation energies obtained reveal relatively stable amorphous state.
Related Topics
Physical Sciences and Engineering
Materials Science
Ceramics and Composites
Authors
T.V. Kulikova, V.A. Bykov, A.A. Belozerova, A.M. Murzakaev, R.E. Ryltsev,