Kinetics of α’-phase nucleation during thermal aging of Fe–22% Cr alloy
- Authors: Rogozhkin S.V.1,2, Korchuganova O.A.1,2, Aleev A.A.1,2
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Affiliations:
- National Research Nuclear University Moscow Engineering Physics Institute
- Institute for Theoretical and Experimental Physics
- Issue: Vol 7, No 2 (2016)
- Pages: 210-213
- Section: Materials of Power Engineering and Radiation-Resistant Materials
- URL: https://journals.rcsi.science/2075-1133/article/view/204934
- DOI: https://doi.org/10.1134/S2075113316020179
- ID: 204934
Cite item
Abstract
The initial stage of phase separation of binary Fe–22 at % Cr alloy during thermal aging at 500°C is studied at the atomic-scale level by atom probe tomography. Upon the behavior analysis of pair-correlation function of chromium atoms, long-range correlations typical of spinodal decomposition are observed at short aging times, which disappear 25 h after aging. The analysis of 3D atomic maps shows that Cr-rich regions form at the initial steps of decomposition, where the chromium concentration increases with an increase in the aging time. At the aging time of ~100 h, the chromium concentration in the center of these regions reaches 80 at %, which corresponds to the α' phase.
Keywords
About the authors
S. V. Rogozhkin
National Research Nuclear University Moscow Engineering Physics Institute; Institute for Theoretical and Experimental Physics
Author for correspondence.
Email: SVRogozhkin@mephi.ru
Russian Federation, Kashirskoe sh. 31, Moscow, 115409; ul. B. Cheremushkinskaya 25, Moscow, 117218
O. A. Korchuganova
National Research Nuclear University Moscow Engineering Physics Institute; Institute for Theoretical and Experimental Physics
Email: SVRogozhkin@mephi.ru
Russian Federation, Kashirskoe sh. 31, Moscow, 115409; ul. B. Cheremushkinskaya 25, Moscow, 117218
A. A. Aleev
National Research Nuclear University Moscow Engineering Physics Institute; Institute for Theoretical and Experimental Physics
Email: SVRogozhkin@mephi.ru
Russian Federation, Kashirskoe sh. 31, Moscow, 115409; ul. B. Cheremushkinskaya 25, Moscow, 117218