Персона: Фесенко, Владимир Александрович
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Институт ядерной физики и технологий
Цель ИЯФиТ и стратегия развития - создание и развитие научно-образовательного центра мирового уровня в области ядерной физики и технологий, радиационного материаловедения, физики элементарных частиц, астрофизики и космофизики.
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- ПубликацияОткрытый доступRecrystallization of cladding tubes from Zr-based alloys for nuclear reactors(2019) Isaenkova, M. G.; Perlovich, Yu. A.; Fesenko, V. A.; Krymskaya, O. A.; Исаенкова, Маргарита Геннадьевна; Фесенко, Владимир Александрович; Крымская, Ольга Александровна© 2019 Published under licence by IOP Publishing Ltd.This paper is devoted to the regularities of change in the crystallographic texture and the structure of cladding tubes with a total degree of deformation by their cross-section of 70-80% as a result of polygonization or recrystallization during heat treatment in the temperature range from 480 to 600 °C. It is shown, that there are two competing processes of crystal lattice perfection in cladding tubes at annealing temperatures over 540 °C. The oriented growth of grain nuclei, formed at the boundaries of grains and disoriented with respect to the deformed matrix by an angle of 20-30° about basal axes, is predominant. At the recrystallization of cladding tubes from E110 alloy, a significant change in their crystallographic texture of cold rolling is observed, i.e. an increase of the integral texture parameter fr increases, and a decrease of fT. The grains, formed at the stage of plastic deformation by twinning, prove to be unstable even at the stage of polygonization, due to the mobility of highly disoriented boundaries under conditions of the anisotropic thermal expansion of neighboring regions.
- ПубликацияТолько метаданныеFeatures of nanostructure and functional properties formation in Ti-Ni shape memory alloys subjected to quasi-continuous equal channel angular pressing(2019) Khmelevskaya, I. Yu.; Karelin, R. D.; Prokoshkin, S. D.; Komarov, V. S.; Isaenkova, M. G.; Perlovich, Yu. A.; Fesenko, V. A.; Zaripova, M. M.; Исаенкова, Маргарита Геннадьевна; Фесенко, Владимир Александрович© Published under licence by IOP Publishing Ltd. Influence of various deformation regimes, included severe plastic deformation by multi-pass rolling, rotary forging and equal channel angular pressing (ECaP) in the normal and quasi-continuous modes, on the structure and properties of Ti-Ni shape memory alloys was studied and compared. Features of structure formation providing a combination of high functional properties were analyzed. Investigation of the texture development, depending on the ECAP regimes and post-deformation annealing, was made.
- ПубликацияТолько метаданныеInfluence of crystallographic texture and phase composition on the effect of superelastinity of foils from alloys based on Ti-Nb(2019) Zaripova, M. M.; Isaenkova, M. G.; Perlovich, Yu. A.; Osintsev, A. V.; Fesenko, V. A.; Исаенкова, Маргарита Геннадьевна; Осинцев, Андрей Вениаминович; Фесенко, Владимир Александрович© 2019 Chelyabinsk State University. All rights reserved.The results is presented of the analysis of the structure, crystallographic texture and anisotropy of manifestation of the superelasticity effect for foils rolled from forged ingots of Ti-22%Nb-6%Zr, Ti-9%Nb-46%Zr, Ti-22% Nb-(1-1,5)%O (at.%) and subjected to heat treatment. Based on the analysis of formation patterns of the crystallographic texture in foils as a result of their cold rolling, the main mechanisms of plastic deformation, which are activated in the listed alloys, are revealed. The variation of the annealing temperature in the range of 550-700°C allows changing the structure and the +crystallographic texture of the deformed foils due to the activation of various processes during annealing and, thus, the functional and mechanical properties of the material. Tests of the foils examined under tension and under cyclic loading (stretching up to a strain of 2.5%, followed by complete unloading of the sample) along and across their rolling direction confirm the presence of anisotropy of the manifestation of superelasticity effect in the materials. It is shown that this effect is orientational and structurally dependent.
- ПубликацияТолько метаданныеOrientation dependence of functional properties of alloys with shape memory effect and superelasticity(2019) Isaenkova, M. G.; Perlovich, Yu. A.; Fesenko, V. A.; Zaripova, M. M.; Исаенкова, Маргарита Геннадьевна; Фесенко, Владимир Александрович© 2018 Maud Gonella publishing secretary. All rights reserved.As applied to alloys with shape memory effects (SME) and superelasticity (SE), the results of an X-ray study of the orientational dependence of their functional properties are presented, which are associated with martensitic transformations (MTs) underlying the above effects. The observed orientational effects are conditioned by the inhomogeneity of the substructure state of grains with different orientations in polycrystalline materials and the anisotropy of the influence of the given loads on the alloy crystal lattice. It was shown that the detection of the inhomogeneous flow of MPs in grains of studied samples proves to be possible only due to of the selectivity of X-ray diffraction. In particular, it was found the following facts: (1) The width of the reverse MT interval in a rolled and quenched Ti-Ni alloy varies more than by 40 K; (2) foils from the Fe-28% Ni-5Mo% alloy, stretched along and across the rolling direction, differ in temperatures of the reverse MT beginning by 200 K; (3) the 100% SME was observed in single crystals from a Ti - Ni alloy with stable orientations by a given deformation of &tild; 15%; (4) the SME in foils from the Fe-28Ni-5Mo alloy, stretched in different directions to the defining deformation δ ≈ 6%, differ by an order of value. It has been established that in superelastic Ti-Nb-based alloys, which have a two-component rolling texture, like all metallic materials with a bcc lattice, the martensitic transformation β ↔ α'' under compression is localized in less fragmented grains with the rolling plane {001}, while in grains with the rolling plane {111} it is almost absent.
- ПубликацияОткрытый доступАНАЛИЗ ВОЛЬФРАМОВЫХ ПЛАСТИН ЛИМИТЕРА ТОКАМАКА Т-10 ПОСЛЕ ДЛИТЕЛЬНОЙ КАМПАНИИ(НИЯУ МИФИ, 2019) ПИСАРЕВ, А. А.; АРХИПОВ, И. И.; БАБИЧ, Я. А.; БЕРДНИКОВА, М. М.; ГАСПАРЯН, Ю. М.; ГРАШИН, С. А.; ДРОБИНИН, В. Е.; ЕФИМОВ, В. С.; ИСАЕНКОВА, М. Г.; КРЫМСКАЯ, О. А.; ПЕРЛОВИЧ, Ю. А.; СТЕПАНОВА, Т. М.; ФЕСЕНКО, В. А.; Фесенко, Владимир Александрович; Бердникова, Мария Михайловна; Крымская, Ольга Александровна; Ефимов, Виталий Сергеевич; Писарев, Александр Александрович; Исаенкова, Маргарита Геннадьевна; Гаспарян, Юрий МикаэловичЛимитер токамака Т-10 представлял собой кольцо из нержавеющей стали, на котором были установлены 32 пары вольфрамовых пластин с электронной стороны (e-тайлы) и столько же пластин с ионной стороны (i-тайлы). Пластины были изготовлены в НИИЭФА им.Ефремова из вольфрама марки ВМП производства фирмы «Полема» (г.Тула).