Establishment of Russian Academy of Sciences Baykov Institute of Metallurgy and Materials Science (IMET RAS)

Yu. M. Platov, Chief Scientist
L. I. Ivanov, Chief Scientist
V. T. Zabolotniy, Deputy Director of Institute, Chief Scientist
V. M. Lazorenko, Senior Researcher
V. I. Tovtin, Senior Researcher, e-mail: tovtinv@list.ru

The mechanisms of interstitial dislocation loops formation under electron irradiation of pure Al and Al—Mg, Al—Zn and Al—Sc solid solutions are studied. The analytical expression describing the kinetics of accumulation of interstitials in the loops is obtained. Numerical calculations of the nucleation and growth parameters for electron irradiated Al are conducted in the frame of classical and kinetics models. It is shown, that critical nucleus of loop is a complex consisting of two dumbbell interstitials. The formula describing kinetics of low temperature radiation hardening of irradiated materials is obtained. Calculations of radiation harding of Al, Al—Mg, Al—Zn and Al—Sc are carried out with the with the using of this formula. The change of the phase composition of these alloys during electron and neutron irradiation are obtained experimentally. The Al–Mg–Sc alloys are proposed for using as prospective radiation resistance structural materials for nuclear energetic. These alloys do not change their mechanical properties after neutron irradiation (fluence 2,5·10²⁰ cm^–2, T = 150 ^oC) that has been testing the alloys at 20–300 ^oC.

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12. Ivanov L. I., Lazorenko V. M., Platov Yu. M., Kalinin V. G., Simakov S. V., Smirnov A. V., Tovtin V. I., Toropova L. S., Shamardin V. K. Fizika i khimiya obrabotki materialov — Physics and Chemistry of Materials Processing. 1985. No. 4. pp. 16–21.
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14. Ivanov V. V., Lazorenko V. M., Platov Yu. M. Fizika i khimiya obrabotki materialov — Physics and Chemistry of Materials Processing. 1991. No. 6. S. 50–52.
15. Altovskiy I. V., Votinov S. N., Dobatkin V. I., Drits M. E., Elagin V. I., Ivanov L. I., Orlov V. V., Platov Yu. M., Toropova L. S., Filatov Yu. A. Konstruktsionnye materialy dlya reaktorov termoyadernogo sinteza (Constructional Materials for Thermonuclear Fusion Reactor). Moscow, 1983. pp. 40–47.
16. Ivanov L. I., Krasnoselov V. A., Platov Yu. M., Tovtin V. I., Toropova L. S., Shamardin V. K. Fizika i khimiya obrabotki materialov — Physics and Chemistry of Materials Processing. 1990. No. 4. pp. 5–8.
17. Ivanov L. I., Ivanov V. V., Lazorenko V. M., Platov Yu. M., Tovtin V. I. Tekhnologiya legkikh splavov — Technology of Light Alloys. 1990. No. 12. pp. 46–50.
18. Ivanov L. I., Ivanov V. V., Lazorenko V. M., Platov Yu. M., Tovtin V. I., Toropova L. S. J. Nucl. Mater. 1992. Vol. 191–194. pp. 1076–1079.
19. Ivanov L. I., Lazorenko V. M., Platov Yu. M., Tovtin V. I. Fizika i khimiya obrabotki materialov — Physics and Chemistry of Materials Processing. 1989. No. 6. pp. 9–11.
20. Platov Yu. M., Pletnev M. N. J. Nucl. Mater. 1994. Vol. 211. pp. 95–100.