On Short-Range Migration of Defects in Electron-Irradiated Fe–16cr Alloys

A. L. Nikolaev

doi:10.17804/2410-9908.2024.6.035-046

A. L. Nikolaev

ON SHORT-RANGE MIGRATION OF DEFECTS IN ELECTRON-IRRADIATED Fe–16Cr ALLOYS

DOI: 10.17804/2410-9908.2024.6.035-046

The residual resistivity recovery method is used to study the migration of radiation-induced defects and their interaction with impurity atoms of Si (0.2, 0.5, and 0.75 at%) and Au (0.13 at%) in electron-irradiated Fe–16Cr alloys at 80–180 K. Doping with impurities results in the suppression of residual resistivity recovery, thus indicating the trapping of migrating defects at impurity atoms, which is accompanied by a decrease in the specific contribution of defects to residual electrical resistivity. The trapping of migrating defects at impurity atoms starts at 150 K in Fe–16Cr–0.13Au and Fe–16Cr–0.2Si and at 130 K in Fe–16Cr–0.75Si. Smooth and monotonous suppression of residual resistivity recovery at sufficiently large impurity concentrations indicates the suppression of correlated recombination in Fe–16Cr–0.13Au and Fe–16Cr–0.2Si, as well as the suppression of the recombination of close pairs in Fe–16Cr–0.5Si and Fe–16Cr–0.75Si. The smooth and monotonous suppression of residual resistivity recovery and the decrease in the specific contribution of defects at trapping indicate a short-range migration of vacancies in the temperature range 130–180 K. Long-range migration of defects starts above 180 K.

Acknowledgement: The research was carried out under the state assignment from the Ministry of Science and Higher Education of the Russian Federation (theme Function, No. 122021000035-6). The author thanks Dr. D. A. Perminov for critically reading the manuscript.

Keywords: Fe–16Cr alloys, electron irradiation, radiation-induced defects, residual resistivity recovery, trapping of defects by Si and Au atoms, short-range migration of vacancies

References:

Benkaddour, A., Dimitrov, C., and Dimitrov, O. Irradiation-induced defects in ferritic Fe–Cr alloys. Materials Science Forum, 1987, 15–18, 1263–1268. DOI: 10.4028/www.scientific.net/MSF.15-18.1263.
Maury, F., Lucasson, P., Lucasson, A., Faudot, F., and Bigot, J. A study of irradiated FeCr alloys: deviations from Matthiessen’s rule and interstitial migration. Journal of Physics F: Metal Physics, 1987, 17 (5), 1143–1165. DOI: 10.1088/0305-4608/17/5/014.
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Druzhkov, A.P. and Nikolaev, A.L. Effect of Si concentration on formation of vacancy complexes in electron-irradiated Fe16Cr–Si alloys studied by positron annihilation. Journal of Nuclear Materials, 2018, 508, 100–106. DOI: 10.1016/j.jnucmat.2018.05.040.
Davletshin, A.E. and Nikolaev, A.L. A portable thermostatic unit for a storage helium dewar. Instruments and Experimental Techniques, 1996, 39 (5), 766–768.
Nikolaev, A.L. The unambiguous identification of vacancy migration stage in resistivity recovery of irradiated metals based on trapping of vacancies at probe impurity atoms. Philosophical Magazine, 2018, 98 (27), 2481–2494. DOI: 10.1080/14786435.2018.1492158.
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А. Л. Николаев

О БЛИЖНЕЙ МИГРАЦИИ ДЕФЕКТОВ В ОБЛУЧЕННЫХ ЭЛЕКТРОНАМИ СПЛАВАХ Fe–16Cr

Методом возврата остаточного электросопротивления исследованы миграция радиационных дефектов и их взаимодействие с примесными атомами Si (0,2, 0,5 и 0,75 ат. %) и Au (0,13 ат. %) в облученных электронами сплавах Fe–16Cr в температурном интервале 80–180 К. Легирование сплавов примесями приводит к подавлению возврата остаточного электросопротивления, что указывает на захват мигрирующих дефектов на атомах примесей, который сопровождается уменьшением удельного вклада дефектов в остаточное электросопротивление. Захват мигрирующих дефектов на атомах примесей начинается выше 150 К в Fe–16Cr–0,13Au и Fe–16Cr-0,2Si и выше 130 К в Fe–16Cr–0,75Si. Плавное и монотонное подавление возврата остаточного электросопротивления при достаточно больших концентрациях примесей указывает на подавление коррелированной миграции в Fe–16Cr–0,13Au и Fe–16Cr–0,2Si, а также рекомбинации близких пар в Fe–16Cr–0,5Si и Fe–16Cr–0,75Si. Плавное подавление возврата остаточного электросопротивления и уменьшение удельного вклада дефектов при захвате указывают на ближнюю миграцию вакансий в температурном интервале 130–180 К. Выше 180 К начинается дальняя миграция дефектов.

Благодарность: Работа выполнена в рамках государственного задания Минобрнауки России (тема «Функция», № 122021000035-6). Автор выражает благодарность Д. А. Перминову за критические замечания при чтении работы.

Ключевые слова: сплавы Fe–16Cr, облучение электронами, радиационные дефекты, возврат остаточного электросопротивления, захват дефектов на атомах Si и Au, ближняя миграция вакансий

Библиография:

Benkaddour A., Dimitrov C., Dimitrov O. Irradiation-induced defects in ferritic Fe–Cr alloys // Materials Science Forum. – 1987. – Vols. 15–18. – P. 1263–1268. – DOI: 10.4028/www.scientific.net/MSF.15-18.1263.
A study of irradiated FeCr alloys: deviations from Matthiessen’s rule and interstitial migration / F. Maury, P. Lucasson, A. Lucasson, F. Faudot, J. Bigot // Journal of Physics F: Metal Physics. – 1987. – Vol. 17 (5). – 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 // Journal of Physics: Condensed Matter. – 1999. – Vol. 11. – P. 8933–8644. – DOI: 10.1088/0953-8984/11/44/302.
Nikolaev A. L. Specificity of stage III in electron-irradiated Fe–Cr alloys // Philosophical Magazine – 2007. – Vol. 87 (31). – P. 4847–4874. – DOI: 10.1080/14786430701468977.
Nikolaev A. L. Recovery of electrical resistivity, short-range order formation and migration of defects in electron-irradiated Fe-4Cr alloy doped with carbon // Philosophical Magazine. – 2011. – Vol. 91 (6). – P. 879–898. – DOI: 10.1080/14786435.2010.534740.
The influence of carbon on the resistivity recovery of proton irradiated Fe–11 at. % Cr alloys / G. Apostolopoulos, V. Lukianova, Z. Kotsina, A. Lagoyannis, K. Mergia, S. Harissopoulos, S. Messoloras // Nuclear Materials and Energy – 2016.– Vol. 9. – P. 465–470. – DOI: 10.1016/j.nme.2016.09.007.
Gómez-Ferrer B. Resistivity recovery in Fe and FeCr alloys. SpringerBriefs in Applied Sciences and Technology Series. – Springer Cham, 2016. – 166 p.
Decoupling of defect and short-range order contributions to resistivity recovery measurements in binary alloys / B. Gómez-Ferrer, I. García-Cortés, J. F. Marco, D. Jiménez-Rey, R. Vila // Physical Review B. – 2014. – Vol. 90. – P. 220102. – DOI: 10.1103/PhysRevB.90.220102.
Dimitrov C., Dimitrov O. Composition dependence of defect properties in electron-irradiated Fe–Cr–Ni solid solutions // Journal of Physics F: Metal Physics. – 1984. – Vol. 14 – P. 793– 811. – DOI: 10.1088/0305-4608/14/4/005.
Nikolaev A. L. Difference approach to the analysis of resistivity recovery data for irradiated short-range ordered alloys // Philosophical Magazine. – 2009. – Vol. 89 (12). – P. 1017–1033. – DOI: 10.1080/14786430902835651.
Druzhkov A. P., Nikolaev A. L. Effects of solute atoms on evolution of vacancy defects in electron-irradiated Fe–Cr-based alloys // Journal of Nuclear Materials. – 2011. – Vol. 408. – P. 194–200. – DOI: 10.1016/j.jnucmat.2010.11.036.
Druzhkov A. P., Nikolaev A. L. Effect of Si concentration on formation of vacancy complexes in electron-irradiated Fe16Cr–Si alloys studied by positron annihilation // Journal of Nuclear Materials. – 2018. – Vol. 508. – P. 100–106. – DOI: 10.1016/j.jnucmat.2018.05.040.
Davletshin A. E., Nikolaev A. L. A portable thermostatic unit for a storage helium dewar // Instruments and Experimental Techniques. – 1996. – Vol. 39 (5). – P. 766–768.
Nikolaev A. L. The unambiguous identification of vacancy migration stage in resistivity recovery of irradiated metals based on trapping of vacancies at probe impurity atoms // Philosophical Magazine. – 2018. – Vol. 98 (27). – P. 2481–2494. – DOI: 10.1080/14786435.2018.1492158.
Interstitial migration in dilute FeSi and FeAu alloys / F. Maury, A. Lucasson, P. Lucasson, P. Moser, Y. Loreaux // Journal of Physics F: Metal Physics. – 1985. – Vol. 15. – P. 1465–1484. – DOI: 10.1088/0305-4608/15/7/007.

Библиографическая ссылка на статью

Nikolaev A. L. On Short-Range Migration of Defects in Electron-Irradiated Fe–16cr Alloys // Diagnostics, Resource and Mechanics of materials and structures. - 2024. - Iss. 6. - P. 35-46. -
DOI: 10.17804/2410-9908.2024.6.035-046. -
URL: http://dream-journal.org/issues/content/article_485.html
(accessed: 21.01.2025).