Publications
Nucleation mechanism of the sigma-to-alpha phase transition in Fe<sub>1-x</sub>Cr<sub>x</sub>
- Author(s)
- Alice Mikikits-Leitner, Bogdan Sepiol, Michael Leitner, Jakub Cieslak, Stanislaw Mieczyslaw Dubiel
- Abstract
This Rapid Communication reports on Mossbauer-spectroscopy measurements of the kinetics of the sigma-to-alpha phase transition in the system Fe-Cr. By isothermally annealing samples of the compositions Fe53.8Cr46.2 and Fe51Cr49 at temperatures between 820 and 855 degrees C the authors gained information about the kinetics of the phase transition in terms of the Johnson-Mehl-Avrami-Kolmogorov equation. The obtained values for the Avrami exponent allow to draw conclusions about the type of nucleation mechanism. The behavior of the Avrami exponent for near-critical temperatures and for higher temperatures indicates a change in the nucleation mechanism with T-T-c.
- Organisation(s)
- Dynamics of Condensed Systems
- External organisation(s)
- AGH University of Science and Technology
- Journal
- Physical Review B
- Volume
- 82
- No. of pages
- 4
- ISSN
- 1098-0121
- DOI
- https://doi.org/10.1103/PhysRevB.82.100101
- Publication date
- 2010
- Peer reviewed
- Yes
- Austrian Fields of Science 2012
- 1030 Physics, Astronomy
- Portal url
- https://ucrisportal.univie.ac.at/en/publications/407a47b0-24f2-482c-8136-f1d495fe3dbe