E.A. Kuleshova
Kurchatov Institute
Network
Latest external collaboration on country level. Dive into details by clicking on the dots.
Publication
Featured researches published by E.A. Kuleshova.
Journal of Nuclear Materials | 1997
B.A. Gurovich; E.A. Kuleshova; Yu. A. Nikolaev; Ya. I. Shtrombakh
Abstract Experimental data on radiation embrittlement in pressure vessel steels of both Russian and American grades, obtained by the authors and also taken from the literature, have been analyzed to assess the relative contributions from the following mechanisms: radiation-induced hardening, inter- and intragranular segregation of impurities at precipitate/matrix interfaces. It is demonstrated that radiation-induced intragranular segregation of impurities frequently provides a significant contribution to radiation embrittlement of pressure vessel steels.
Journal of Nuclear Materials | 2000
B.A. Gurovich; E.A. Kuleshova; Ya. I. Shtrombakh; O.O. Zabusov; E. A. Krasikov
Russian reactor pressure vessel steels have been studied in three conditions: initial, irradiated and annealed. It has been established that irradiation induces both intergranular as well as intragranular phosphorus segregation. Fractographic studies demonstrated that brittle intergranular and ductile intergranular fracture surfaces of Charpy specimens appear as a result of intergranular and intragranular segregation, respectively. Transmission electron microscope (TEM) studies have revealed radiation-induced precipitates on interface boundaries to which intragranular phosphorus segregation occurs. Auger electron spectroscopy (AES) has been applied to detect phosphorus enrichment of fracture surfaces in the regions of brittle and ductile intergranular fractures.
Journal of Nuclear Materials | 2002
E.A. Kuleshova; B.A. Gurovich; Ya. I. Shtrombakh; D. Yu. Erak; O.V. Lavrenchuk
Comparative microstructural studies of both surveillance specimens and reactor pressure vessel (RPV) materials of VVER-440 and VVER-1000 light water reactor systems have been carried out, following irradiation to different fast neutron fluences and of the heat treatment for extended periods at the operating temperatures. It is shown that there are several microstructural features in the radiation embrittlement of VVER-1000 steels compared to VVER-440 RPV steels that can cause changes in the contributions of different radiation embrittlement mechanisms for VVER-1000 steel.
Journal of Nuclear Materials | 1999
B.A. Gurovich; E.A. Kuleshova; O.V. Lavrenchuk; K.E. Prikhodko; Ya. I. Shtrombakh
Abstract A wide range of pressure vessel steels – in the initial state (i.e. unirradiated), after irradiation, recovery annealing and re-irradiation – have been studied using microstructural and fractographic methods. The analysis of the data has allowed quality explanations of the key features of radiation embrittlement (RE) in reactor pressure vessel steels (RPVS) and resulting from initial- and re-irradiation to be proposed, and also to justify the existing concepts concerning the mechanisms of RE.
Journal of Nuclear Materials | 1996
B.A. Gurovich; E.A. Kuleshova; O.V. Lavrenchuk
Abstract Two RPV steels with American denomination ASTM A508 and ASME A533B have been investigated with regard to radiation hardening, shift in ductile-to-brittle transition temperature and recovery behavior after thermal annealing treatments. Main emphasis has been given to a through examination and classification of fracture zones of tested Charpy-V specimens in dependence of irradiation and test conditions. The results of this investigation have been compared with the data found in Russian reactor pressure vessel steels.
Journal of Experimental and Theoretical Physics | 2013
B.A. Gurovich; K. E. Prikhod’ko; E.A. Kuleshova; K. I. Maslakov; D. A. Komarov
This study is a continuation of works [1–12] dealing with the field developed by the authors, namely, to widen the possibilities of radiation methods for a controlled change in the atomic composition and properties of thin-film materials. The effects under study serve as the basis for the following two methods: selective atom binding and selective atom substitution. Such changes in the atomic composition are induced by irradiation by mixed beams consisting of protons and other ions, the energy of which is sufficient for target atom displacements. The obtained experimental data demonstrate that the changes in the chemical composition of thin-film materials during irradiation by an ion beam of a complex composition take place according to mechanisms that differ radically from the well-known mechanisms controlling the corresponding chemical reactions in these materials. These radical changes are shown to be mainly caused by the accelerated ioninduced atomic displacements in an irradiated material during irradiation; that is, they have a purely radiation nature. The possibilities of the new methods for creating composite structures consisting of regions with a locally changed chemical composition and properties are demonstrated for a wide class of materials.
Key Engineering Materials | 2013
B.A. Gurovich; E.A. Kuleshova; D.A. Maltsev; O. Zabusov; K.E. Prikhodko; A.S. Frolov; S.V. Fedotova; D. Erak; Zhurko Denis; Mikhail Saltykov
In this paper the influence of fast neutron flux on the structural features and properties of VVER-1000 reactor pressure vessel steels was studied. It is shown that for high Ni steels the flux effect is due to hardening and non-hardening mechanisms of radiation embrittlement.
Archive | 2004
B.A. Gurovich; E.A. Kuleshova; Dmitry Iosifivich Dolgy; K.E. Prikhodko; Alexandr G. Domantovsky; K. I. Maslakov; E. Z. Meilikhov
The paper demonstrates a possibility for effective modification of the thin-film material’ chemical composition, structure and physical properties as result of selective removal of atoms by the certain energy ion beam. One of the most promising results of this effect consists in developing the new technology for 3D micro-and nano-structures production for various applications.
Proceedings of SPIE, the International Society for Optical Engineering | 2006
B.A. Gurovich; K.E. Prikhodko; Alexandr G. Domantovsky; E.A. Kuleshova; E. Olshansky; K. I. Maslakov; Y. Lunin
The structure and electric properties of initial oxides and metals (Bi, Ag, Cu, Ni, Co, Mo and W) produced by Selective Removal of oxygen Atoms technique (SRA) were studied. It was found a correspondence of electrical conductivity of SRA metals and pure sputtered metals films. At the same time, low resistance of some oxides, for instance CuO, will initiate big leakage currents inside the layer. Among the investigated materials special attention will be paid to SRA Bi, Mo and W because of the high values of contact resistance and puncture potential with initial oxides. It is shown the adaptability of Selective Removal of Atoms technique for formation of conductive insulated structures in layers for new micro and nano-electronic devices.
Archive | 2007
B.A. Gurovich; E.A. Kuleshova; Dmitry Iosifivich Dolgy; K.E. Prikhodko; Alexander Domantovsky; K. I. Maslakov; E. Z. Meilikhov; Andrey Yakubovsky
The paper demonstrates a possibility for effective modification of the thin-film material’ chemical composition, structure and physical properties as result of selective removal of atoms by the certain energy ion beam. One of the most promising results of this effect is a production of devices with nanostructured high-density patterned magnetic media.