PROBLEMS OF ATOMIC SCIENCE AND TECHNOLOGY
Series: Nuclear and Reactor Constants

since 1971

Русский (РФ)

ISSN 2414-1038 (online)

METHODOLOGY OF  RADIATION RESISTANCE ASSESSMENT FOR THE MATERIALS IRRADIATED IN ION ACCELERATORS

EDN: IVMBMR

Authors & Affiliations

Margolin B.Z.1, Sorokin A.A.1, Kashtanov A.D.1, Petrov S.N.1, Dub A.V.2, Pechenkin V.A.3
1 National Research Center “Kurchatov institute” – CRISM “Prometey”, Saint-Petersburg, Russia
2 Private Enterprise for Nuclear Industry Scientific Development “Science and Innovations”, Moscow, Russia
3 A.I. Leypunsky Institute for Physics and Power Engineering, Obninsk, Russia

Margolin B.Z.1 – Deputy Head of Department – Head of Laboratory, Professor, Dr. Sci. (Tech.). Contacts: 49, Shpalernaya st., Saint-Petersburg, Russia, 191015. Tel: +7 (812) 710-25-38; e-mail: This email address is being protected from spambots. You need JavaScript enabled to view it..
Sorokin A.A.1 – Head of Workgroup, Cand. Sci. (Tech.).
Kashtanov A.D.1 – Advisor to the CEO, Dr. Sci. (Tech.).
Petrov S.N.1 – Head of Laboratory, Dr. Sci. (Tech.).
Dub A.V.2 – First Deputy CEO, Dr. Sci. (Tech.), Professor.
Pechenkin V.A.3 – Leading Researcher, Cand. Sci. (Pys.-Math.).

Abstract

The article considers the main advanced methods and proposes original investigation methods of material irradiated in ion accelerators. A methodology is proposed for assessment of the radiation resistance of materials, that includes the type and geometry of the specimens, assessment of their quality, methods of ion-irradiation of specimens modeling the neutron irradiation, methods of microstructure investigation and determination of the radiation resistance characteristics for various degradation mechanisms of materials.
Two methods are considered for determination of the radiation hardening: estimation on the basis of the results of micro-hardness measurement for material in initial and irradiated states and on the basis of the data of determination of density and sizes of microstructure elements. Conditions are found when the microstructure investigation should be performed by atom probe tomography in addition to the transmission electron microscopy methods to determine a contribution of precipitates and clusters to hardening.
The original methods are proposed for investigation of the radiation swelling, radiation creep, brittle fracture resistance for ferritic-martensitic steels and the high temperature radiation embrittlement of austenitic steels.
A method is proposed for determination of the radiation swelling dependence on damage dose on the basis of ion-irradiation and study of single specimen. Original method for study of radiation creep is proposed by means of irradiation of preliminary loaded specimens by heavy ions having track length much less than specimen thickness. This method allows one to use heavy ions with the energies less than 12 MeV. The methods are proposed for the resistance estimation to irradiation-assisted stress corrosion cracking (IASCC) in water environments imitating the coolant of the first contour of WWER type reactor and WWER with supercritical pressure.
The transferability functions are introduced that allow one to determine the ion irradiation condition for determination of one or another radiation resistance characteristic for a given condition of neutron irradiation.

Keywords
ion irradiation, radiation hardening, radiation swelling, radiation creep, irradiation-assisted stress corrosion cracking, microstructure, electronic microscopy, microhardness, autoclave tests

Article Text (PDF, in Russian)

References

UDC 621.039

Problems of Atomic Science and Technology. Series: Nuclear and Reactor Constants, 2025, no. 4, 4:13