S. G. Bogdanov, I. F. Berger, V. I. Bobrovskii, V. I. Voronin, V. D. Parkhomenko, V. M. Chernov

NEUTRON STUDIES OF THE V-4Ti-4Cr ALLOY

Competitive economic indicators for fast-neuron power reactors can be achieved with high coefficients of fuel burnout, which requires remarkable enhancement of radiation resistance of fuel pin claddings. Nowadays, low-activation vanadium alloys are projected as promising fuel cladding materials in view of their high radiation and thermal resistance in wide temperature and damage dose ranges. Neutron diffraction and small-angle neutron scattering are employed to study the microstructure of the V-4Ti-4Cr alloy subjected to irradiation with fast neutrons in the fluence range up to 1·1020 cm−2. Minor phases precipitated in the system are structurally characterized. The applicability and prospects of neutron diffraction methods in terms of studying the radiation behavior of this kind of alloys are shown.

Acknowledgments: The research was carried out at the IMP Neutron Material Science Complex within the state assignment of the Ministry of Science and Higher Education of the Russian Federation (theme Flux No. AAAA-A18–118020190112–8).

References:

1. IAEA activities on coordinated research of structural materials for advanced reactor systems / A. Zeman, R. Kaiser, V. Inozemtsev, R.L. Beatty // J. Nucl. Mater. – 2012. - Vol. 428. - P. 3-5. – DOI: 10.1016/j.jnucmat.2012.06.024.
2. Was, G. S. Fundamentals of Radiation Materials Science.  Metals and Alloys // New-York: Springer Science+Business Media, 2007.- 1002 p.- ISBN 978-1-4939-3436-2.- DOI: 10.1007/978-1-4939-3438-6.
3. Neutron diffraction study of structure and phase composition of fuel claddings made of cold-deformed steel ChS68 after normal operation in BN-600 reactor / V. I. Voronin, I. F. Berger, N. V. Proskurnina, B.N. Goshchitskii // J. Nucl. Mater.- 2018.-  Vol. 509.-  P.218-224.-DOI:10.1016/j.jnucmat.2018.06.036.
4. Voronin, V.I. Neutronography of Irradiated Reactor Austenitic Steels  // Crystallography Reports.- 2021.- Vol.66.- No.2.- P.314-322.-DOI: 10.1134/S1063774521020127.
5. Peculiarities of radiation-induced processes in the Cr-Ni-Mo austenitic steels studied by neutron diffraction / V.I. Voronin, V.L. Arbuzov, V.I. Bobrovskii, S.E. Danilov, K.A. Kozlov, N.V. Proskurnina, V.V. Sagaradze // Diagnostics, Resource and Mechanics of materials and structures.-  2015 . - No 5. – P. 80-89.- DOI: 10.17804/2410-9908.2015.5.080-089.
6. Influence of the austenitic stainless steel microstructure on the void swelling under ion irradiation / B. Rouxel, C. Bisor, Y. De Carlan, A. Courcelle, A. Legris// EPJ Nuclear Sci. Technol.-2016.- Vol. 2.- P. 30.- DOI: 10.1051/epjn/2016023.
7. The accumulation and annealing of radiation-induced defects and effect of hydrogen on the physicomechanical properties of the V-4Ti-4Cr vanadium-based alloys under low-temperature (at 77K) neutron irradiation  / V.L. Arbuzov, B.N.Goshchitskii, V.V. Sagaradze, S.E. Danilov, Yu.N. Zuev, A.E. Kar’kin, V.D. Parkhomenko, A.V. Kozlov, V.M. Chernov // Physics of Metals and Metallography.-2016, Vol.117, No3.-P.299-306.-DOI: 10.1134/S0031918X16030030.
8. Microstructure of V-4Ti-4Cr alloy, irradiated by electrons, neutrons and ions of deuterium after various heat treatments (in Russian) / V.L. Arbuzov, B.N. Goschitskiy, S.E. Danilov, V.V. Sagaradze, O.V. Antonova, G.A. Raspopova, V.M. Chernov, A.V. Kozlov // Voprosy atomnoy nauki i tekhniki (VANT). The “Material science and new materials” series.- 2018.- № 3(94).- С. 4-12.- http://www.bochvar.ru/vopros/.
9. Nuclear Physical Properties of Ferritic-Martensitic Steel EK-181 under Conditions of Long Term Neutron Irradiation in Fast Breeder BN-600 and Fusion DEMO-RF Reactors / D. A. Blokhin, M. V. Leontyeva-Smirnova, V. M. Chernov, A. I. Blokhin, N. A. Demin, I. V. Sipachev // Inorganic Materials: Applied Research.- 2011.- Vol. 2.- No. 2.- P. 129–135.- DOI: 10.1134/S2075113311020067.
10. Structure–Phase Transformations and Physical Properties of Ferritic–Martensitic 12% Chromium Steels EK-181 and ChS-139 /V. M. Chernov, M. V. Leont’eva-Smirnova, M. M. Potapenko, N. A. Polekhina, I. Yu. Litovchenko, A. N. Tyumentsev, E. G. Astafurova, and L. P. Khromova // Technical Physics.-2016.- Vol. 61, No. 1.- P.97-102.-DOI: 10.1134/S1063784216010084.
11. Rodriguez-Carvajal J. Recent advances in magnetic structure determination by neutron powder diffraction // Physica B. – 1993. Vol.192. - P. 55-64. – DOI: 10.1016/0921-4526(93)90108-I. 
12. Ungar T., Borbely A. The effect of dislocation contrast on x-ray line broadening: a new approach to line profile analysis // Appl. Phys. Lett. – 1996. Vol. 69(21). - P.3173-3175. – DOI:  10.1063/1.117951.
13. Dislocation structure evolution induced by irradiation and plastic deformation in the Zr–2.5Nb nuclear structural material determined by neutron diffraction line profile analysis / L. Balogh, D.W. Brown, P. Mosbrucker, F.Long, M.R. Daymond // Acta Materialia.- 2012.-Vol.60.- P.5567–5577.-DOI:10.1016/j.actamat.2012.06.062.
14. Small angle X-ray scattering investigation of submicroscopic porosity with fractal properties/ H.D. Bale, P.W. Schmidt // Phys. Rev. Lett.-1984.- Vol.53.-  P.596-604. –DOI:10.1103/physrevlett.53.596.
15. Debye P., Anderson H.R., Brumberger H. Scattering by an inhomogeneous solid. II. The correlation function and its application // J. Apll. Phys. – 1957.- Vol. 28.- P. 679-684.
16. Small-Angle Neutron Scattering Investigation of the Nanostructure of Ferritic- Martensitic 12%-Chromium Steels / S. G. Bogdanov, B. N. Goshchitskii, V. D. Parkhomenko, M. V. Leontieva-Smirnova, V. M. Chernov // Physics of Solid State.- 2014.- Vol. 56.- No. 1.- P.1-13.- DOI: 10.1134/S1063783414010065.
17. Small-Angle Neutron Scattering Investigation of the Substructure of Nickel Irradiated with Fast Neutrons  / S. G. Bogdanov, B. N. Goshchitskii, V. D. Parkhomenko // Physics of Metals and Metallography.-2014.- Vol.115.- No6.- P.566-569.- DOI: 10.1134/S0031918X14060039.
18. Feigin L.A., Svergun D.I. Structure Analysis by Small-Angle X-Ray and Neutron Scattering // New-York: Plenum Press, 1987, 335 p, ISBN 0-306-42629-3.

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