S. E. Danilov
FORMATION OF INTERMETALLIC PARTICLES IN AN Fe-Ni-Al ALLOY DURING ANNEALING AND ELECTRON IRRADIATION
DOI: 10.17804/2410-9908.2022.6.107-116 The behavior of intermetallic nanoparticles, such as Ni3Al, and vacancy defects in an fcc Fe-Ni-Al alloy during annealing and electron irradiation is studied by measuring residual resistivity. It is shown that, during annealing at early stages, Ni3Al zones are formed in the quenched Fe-Ni-Al alloy, which increase residual electrical resistance, and during annealing above 700 K, nanosized (~4.5 nm) intermetallic precipitates are formed from them, uniformly distributed in the alloy matrix, whose growth leads to a decrease in residual resistivity. Under irradiation at room temperature, vacancy defects accumulate in the alloy in the form of vacancy complexes. The dissociation of these complexes at about 400 K causes the appearance of freely migrating vacancies and enhances self-diffusion forming Ni3Al bands. At about 600 to 700 K, the solid solution is decomposed thermally. At higher temperatures, the formation of intermetallic particles occurs, which is characterized by a decrease in electrical resistance.
Acknowledgement: The research was performed under the state assignment, theme Function, No. 122021000035-6. Keywords: irradiation, electrons, electrical resistivity, Fe-Ni-Al alloy, intermetallic compounds, point defect sinks, solid solution decomposition  References:
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С. Е. Данилов
ОБРАЗОВАНИЕ ИНТЕРМЕТАЛЛИДНЫХ ЧАСТИЦ В СПЛАВЕ Fe-Ni-Al ПРИ ОТЖИГЕ И ОБЛУЧЕНИИ ЭЛЕКТРОНАМИ
Методом измерения остаточного электрического сопротивления исследовано поведение интерметаллидных наночастиц типа Ni3Al и вакансионных дефектов в ГЦК-сплаве Fe-Ni-Al при отжигах и при электронном облучении. Было показано, что в закаленном сплаве Fe-Ni-Al при отжиге на ранних этапах происходит образование зон состава Ni3Al, повышающих остаточное электросопротивление, а при отжигах выше 700 К из них образуются наноразмерные (~4,5 нм) интерметаллидные выделения, равномерно распределенные в матрице сплава, рост которых приводит к уменьшению остаточного сопротивления. При облучении в районе комнатных температур происходит накопление вакансионных дефектов в виде вакансионных комплексов. Диссоциация этих комплексов в районе 400 К приводит к появлению свободно мигрирующих вакансий и усилению самодиффузии, приводящей к образованию зон состава Ni3Al. В районе 600–700 К процесс распада твердого раствора происходит термически. При более высоких температурах происходит формирование интерметаллидных частиц, характеризующееся спадом электросопротивления.
Благодарность: Исследование выполнено в рамках государственного задания Минобрнауки России (тема «Функция» Г.р. № 122021000035-6). Ключевые слова: облучение, электроны, электросопротивление, сплав Fe-Ni-Al, интерметаллиды, стоки то-чечных дефектов, распад твердого раствора Библиография:
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- An experimental survey of swelling in commercial Fe–Cr–Ni alloys bombarded with 5 MeV Ni Ions / W. G. Johnston, J. H. Rosolowsky, A. M. Turkalo, T. Lauritze // J. Nucl. Mater. – 1974. – 54 (1). – P. 24–40. – DOI: 10.1016/0022-3115(74)90073-7.
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- Wilson G., Pickering F. B. A study of zone formation in an austenitic steel containing 4% titanium // Acta Metallurgica. – 1968. – 16 (1). – P. 115–131. – DOI: 10.1016/0001-6160(68)90080-1.
- A resistometric study of ageing in nimonic alloys (I). PE16 / R. J. White, S. B. Fisher, K. M. Miller, G. A. A. Swallow // J. Nucl. Mater. – 1974. – Vol. 52 (1). – P. 51–58. – DOI: 10.1016/0022-3115(74)90024-5.
- Whelchel R. L., Kelekanjeri V. S. K. G., Gerhardt R. A. Mechanical and electrical characterisation in age hardened Waspaloy microstructures // International Heat Treatment & Surface Engineering. – 2009. – 3 (1). – P. 35–39. – DOI: 10.1179/174951409X12450558152589.
- Formation and evolution of intermetallic nanoparticles and vacancy defects under irradiation in Fe–Ni–Al ageing alloy characterized by resistivity measurements and positron annihilation / A. P. Druzhkov, S. E. Danilov, D. A. Perminov, & V. L. Arbuzov // Journal of Nuclear Materials. – 2016. – 476. – P. 168–178. – DOI: 101016/jjnucmat201604045.
- Lifschitz I. M., Slyozov V. V. The Kinetics of Precipitation from Supersaturated Solid Solutions // J. Phys, Chem. Solids. – 1961. – Vol. 19 (1–2). – P. 35–50. – DOI: 10.1016/0022-3697(61)90054-3.
- Quantification of the coarsening kinetics of γ′ precipitates in Waspaloy microstructures with different prior homogenizing treatments / V. S. K. G. Kelekanjeri, L. Moss, R. A. Gerhardt, J. Ilavsky // Acta Mater. – 2009. – 57 (16). – P. 4658–4670. – DOI: 10.1016/j.actamat.2009.06.019.
- Arbuzov V. L., Druzhkov A. P., Danilov S. E. Effects of phosphorus on defects accumulation and annealing in electron-irradiated Fe–Ni austenitic alloys // J. Nucl. Mater. – 2001. – 295. – P. 273–280. – DOI: 10.1016/S0022-3115(01)00505-0.
- Dimitrov C., Dimitrov O., Dworschak F. The interaction of self interstitials with undersized solute atoms in electron-irradiated aluminium // Journal of Physics F: Metal Physics. – 1978. – 8. – P. 1031–1052. – DOI: 10.1088/0305-4608/8/6/009.
- Ardell A. J. & Nicholson R. B. On the modulated structure of aged Ni-Al alloys // Acta Metall. – 1966. – 14 (10). – P. 1295–309.
- An intermetallic forming steel under radiation for nuclear applications / C. Hofer, E. Stergar, S. A. Maley, Y. Q. Wang, P. Hosemann // J. Nucl. Mater. – 2015. – 458. – P. 361–368. – DOI: 10.1016/j.jnucmat.2014.12.099.
Библиографическая ссылка на статью
Danilov S. E. Formation of Intermetallic Particles in An Fe-Ni-Al Alloy During Annealing and Electron Irradiation // Diagnostics, Resource and Mechanics of materials and structures. -
2022. - Iss. 6. - P. 107-116. - DOI: 10.17804/2410-9908.2022.6.107-116. -
URL: http://dream-journal.org/issues/2022-6/2022-6_388.html (accessed: 30.03.2025).
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