A. L. Nikolaev
SHORT-RANGE ORDER IN Fe-Cr ALLOYS IRRADIATED WITH ELECTRONS AT LOW TEMPERATURES AND Cr SOLUBILITY IN α-IRON NEAR 270 K
DOI: 10.17804/2410-9908.2021.6.006-018 Chromium has limited solubility in a-iron. It is shown that unsaturated Fe-Cr alloys should demonstrate short-range ordering (i.e. tendency to neighboring of Fe and Cr atoms). The type of short-range ordering in several Fe-Cr alloys is revealed from the data on the recovery of residual electrical resistivity after low temperature electron irradiation at sufficiently low temperatures. The combined consideration of the data on short-range ordering and chromium solubility at 570 K (Scr. Mater. 2014 v. 74, p. 48 and ibid 2016 v. 122, p. 31) gives the confidence interval for the solubility limit near 270 K equal to 8.8±0.4 at. % Cr.
Acknowledgement: The research was carried out under a state assignment from the Ministry of Science and Higher Education of the Russian Federation (theme Function, No. AAAA-A19-119012990095-0). Keywords: Fe-Cr alloys, Cr solubility limit in α-iron, electron irradiation, recovery of residual electrical resistivity, short-range ordering References:
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А. Л. Николаев
БЛИЖНИЙ ПОРЯДОК В ОБЛУЧЕННЫХ ЭЛЕКТРОНАМИ ПРИ НИЗКИХ ТЕМПЕРАТУРАХ СПЛАВАХ Fe-Cr И РАСТВОРИМОСТИ ХРОМА В α-ЖЕЛЕЗЕ ВБЛИЗИ 270 К
Хром имеет ограниченную растворимость в α-железе. Ненасыщенные сплавы Fe-Cr должны демонстрировать ближнее упорядочение (БУ) по типу порядка. Из данных по возврату остаточного электросопротивления после низкотемпературного облучения электронами высоких энергий установлен тип БУ в ряде сплавов Fe-Cr при достаточно низких температурах. Совместное рассмотрение данных по БУ и пределу растворимости Cr при 570 К (Scr. Mater. 2014 v. 74, p. 48 и ibid 2016 v. 122, p. 31) позволяют установить доверительный интервал для предела растворимости вблизи 270 К, равный 8.8±0.4 ат. % Cr.
Благодарность: Работа выполнена в рамках государственного задания МИНОБРНАУКИ России (тема «Функция», № АААА-А19-119012990095-0). Ключевые слова: сплавы Fe-Cr, предел растворимости Cr в -железе, облучение электронами, возврат остаточного электросопротивления, ближнее упорядочение Библиография:
- Bachhav Mukesh, Odette G. Robert, Marquis Emmanuelle A. a´ precipitation in neutron-irradiated Fe–Cr alloys // Scripta Materialia – 2014. – Vol. 74. – P. 48–51. – DOI: 10.1016/j.scriptamat.2013.10.001.
- Kinetics of a´ precipitation in an electron-irradiated Fe15Cr alloy / O. Tissot, C. Pareige, E. Meslin, B. Decamps, J. Henry // Scripta Materialia. – 2016. – Vol. 122. – P. 31–35. – DOI: 10.1016/J.SCRIPTAMAT.2016.05.021.
- Mirebeau I., Hennion M., Parette G. First measurement of short-range-order inversion as a function of concentration in a transition alloy // Phys. Rev. Letters –1984. – Vol. 53, iss. 7. – P. 687–690. – DOI: 10.1103/PHYSREVLETT.53.687.
- Filippova N. P., Shabashov V. A., Nikolaev A. L. Mössbauer Study of Irradiation-Accelerated Short-Range Ordering in Binary Fe-Cr Alloys // Physics of Metals and Metallography. – 2000. – Vol. 90, No. 2 – P. 145–152.
- Dimitrov C., Dimitrov O. Composition dependence of defect properties in electron-irradiated Fe-Cr-Ni solid solutions // J. Phys. F: Met. Phys. – 1984. – Vol. 14 – P. 793– 811. – DOI: 10.1088/0305-4608/14/4/005.
- Vaessen P., Lengeler B., Shilling W. Recovery of electrical resistivity in electron-irradiated concentrated silver-zinc alloys // Rad. Effects – 1984. – Vol. 81. – P. 277–292. – DOI: 10.1080/00337578408206075.
- Ruban A. V., Korzhavyi P. A., Johansson B. First-principles theory of magnetically driven anomalous ordering in bcc Fe-Cr alloys // Phys. Rev. B – 2008. –Vol. 77. iss 9. – P. 094436. – DOI: 10.1103/PHYSREVB.77.094436.
- Investigation of the kinetics of short-range order formation and quenched-in vacancy annihilation in Au-15 at. % Ag by resistivity measurements / W. Kohl, R. Scheffel, H. Heidsiek, K. Lucke // Acta metall. – 1983. – Vol. 31, No. 11. – P. 1895–1908. – DOI: 10.1016/0001-6160(83)90135-9.
- Nikolaev A. L. Specificity of stage III in electron-irradiated Fe-Cr alloys // Phil. Mag. – 2007. – Vol. 87, No. 31. – P. 4847–4874. – DOI: 10.1080/14786430701468977.
- Nikolaev A. L. Difference approach to the analysis of resistivity recovery data for irradiated short-range ordered alloys // Phil. Mag. – 2009. – Vol. 89, No. 12. – P. 1017–1033. – DOI: 10.1080/14786430902835651.
- Nikolaev A. L. Recovery of electrical resistivity, short-range order formation and migration of defects in electron-irradiated Fe-4Cr alloy doped with carbon // Phil. Mag. – 2011. – Vol. 91, No. 6. – P. 879–898. – DOI: 10.1080/14786435.2010.534740.
- A study of irradiated FeCr alloys: deviations from Matthiessen’s rule and interstitial migration / F. Maury, P. Lucasson, A. Lucasson, F. Faudot, J. Bigot // J. Phys. F: Met. Phys. – 1987. – Vol. 17. – P. 1143–1165. – DOI: 10.1088/0305-4608/17/5/014.
- Nikolaev A. L. Stage I of recovery in 5 MeV electron-irradiated iron and iron-chromium alloys: the effect of small cascades, migration of di-interstitials and mixed dumbbells // J. Phys.: Condens. Matter. – 1999. – Vol. 11. – P. 8933–8644. – DOI: 10.1088/0953-8984/11/44/302.
Библиографическая ссылка на статью
Nikolaev A. L. Short-Range Order in Fe-Cr Alloys Irradiated with Electrons at Low Temperatures and Cr Solubility in α-Iron near 270 K // Diagnostics, Resource and Mechanics of materials and structures. -
2021. - Iss. 6. - P. 6-18. - DOI: 10.17804/2410-9908.2021.6.006-018. -
URL: http://dream-journal.org/issues/content/article_346.html (accessed: 21.12.2024).
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