Персона:
Фесенко, Владимир Александрович

Научные группы

Научная группа

Лаборатория рентгеновского текстурного анализа (Кафедра №9 ИЯФиТ)

Организационные подразделения

Организационная единица

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.

Фамилия

Фесенко

Имя

Владимир Александрович

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Теперь показываю 1 - 10 из 30

Только метаданные
CRYSTALLOGRAPHIC TEXTURE AND STRUCTURE FORMED IN ROLLED SHEETS OF ZIRCONIUM ALLOYS DURING ANNEALING
(2022) Klyukova, K. E.; Isaenkova, M. G.; Krymskaya, O. A.; Fesenko, V. A.; Исаенкова, Маргарита Геннадьевна; Крымская, Ольга Александровна; Фесенко, Владимир Александрович
This paper examines the processes of recrystallization in sheets of Zr – 2.5% Nb alloy rolled down to a 50–90% deformation and annealed at 610oC for 1, 3 and 5 hours. The heating rate varied from 10 to 100oC/min. With the help of X-ray structure and texture analysis, the authors looked at optimizing the crystal structure of the deformed alloy while examining changes in the crystallographic texture. It was established that annealing of Zr – 2.5% Nb alloy sheets performed at the temperature that corresponds to the dual phase region α + β of an equilibrium phase diagram also leads to recrystallization, as it happens when applying the annealing temperature of 580oC. However, an 11% increase in the concentration of the additional phase suppresses changes in the crystallographic texture, which may be due to the predominant precipitation of β-zirconium at grain boundaries. At the same time, the growth of recrystallized grains still follows the main regularities of orientation: the orientation of growing grains corresponds to the texture maximum slopes of the direct pole figure (0001); an increased pole density was observed on the difference charts of the direct pole figure (10.0), which is indicative of the presence of grains that are disoriented to the deformed matrix at 30o around the base normals. It is shown that the contribution of the above mentioned processes is determined by the type of initial texture, the annealing temperature, the heating rate and the amount of β-phase. An extended annealing time (from 1 to 5 hours) at the temperature of the dual phase region does not cause any significant change in the crystallographic texture.
Только метаданные
Differential Scanning Calorimetry Determination of the Hydrogen Solubility in E110opt and E635 Zirconium Alloys
(2022) Tenishev, A. V.; Petrov, M. I.; Isaenkova, M. G.; Mikhal’chik, V. V.; Fesenko, V. A.; Тенишев, Андрей Вадимович; Петров, Марк Игоревич; Исаенкова, Маргарита Геннадьевна; Михальчик, Владимир Валерьевич; Фесенко, Владимир Александрович
Только метаданные
Orientation 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.
Только метаданные
Elaboration of a Hydrogenation Procedure for Zirconium Alloys
(2025) Mikhalchik, V. V.; Mikhalchik,V.V.; Isaenkova, M. G.; Tenishev, A. V.; Shornikov, D. P.; Bazhenov, A. A.; Petrov, M. I.; Fesenko,V. A.; Krymskaya, O. A.; Михальчик, Владимир Валерьевич; Исаенкова, Маргарита Геннадьевна; Тенишев, Андрей Вадимович; Шорников, Дмитрий Павлович; Баженов, Александр Андреевич; Петров, Марк Игоревич; Фесенко, Владимир Александрович; Крымская, Ольга Александровна; Чернякова, Валерия Сергеевна
Только метаданные
Regularities of structure and texture development in austenitic steel during cold rolling and heat treatment
(2022) Krymskaya, O. A.; Isaenkova, M. G.; Fesenko, V. A.; Minushkin, R. A.; Крымская, Ольга Александровна; Исаенкова, Маргарита Геннадьевна; Фесенко, Владимир Александрович; Минушкин, Роман Александрович
The paper studies the regularities of the structure and texture formation in austenitic steel AISI 304 under cold rolling and subsequent heat treatment.Regularities of structure and texture formation depending on the rolling type and deformation degree were established.The ratios of main texture components, the volume fractions and the distortion of the martensite s crystalline lattice were analyzed.It is shown that mechanisms of the austenite Дє martensite phase transformation in the course of cold rolling may change depending on various deformation schemes, as well as mechanisms of the reverse phase transformation variate under subsequent annealing.Herewith depending on the rolling type and deformation degree, the crystallographic texture formation of the nucleating austenite under the heat treatment can have single component or multi-component character and follows different orientation relations.The more scattered martensite texture after deformation results in the formation of fine-dispersed austenite, which hardens the material keeping a sufficient level of plasticity.
Только метаданные
Influence 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.
Только метаданные
Effect of the Stressed State on the Phase Transformations in Zirconium-Based Alloys
(2022) Korotitskii, A. V.; Stolbov, S. D.; Isaenkova, M. G.; Tenishev, A. V.; Mikhal'chik, V. V.; Krymskaya, O. A.; Fesenko, V. A.; Исаенкова, Маргарита Геннадьевна; Тенишев, Андрей Вадимович; Михальчик, Владимир Валерьевич; Крымская, Ольга Александровна; Фесенко, Владимир Александрович
© 2022, Pleiades Publishing, Ltd.Abstract: The crystallographic aspects of the phase transformations in zirconium alloys under compressive stresses are studied, and the changes in the sizes of cladding tubes, rods, and rings made of E110opt and E125 alloys at compressive stresses and without them are determined. The temperature of the onset of the phase transformation on heating is found to shift toward low temperatures under a load applied to a cladding tube ring in the diametral direction, and a noticeable strain leading to the appearance of ellipticity of the rings are detected. Some of the versions of the Burgers orientation relationship are operative during the reverse β‒α phase transformation under compressive stresses, which manifests itself in the suppression of growth of texture maxima in the applied load direction during cooling. Deformation is shown to be accelerated on heating in the two-phase α + β region under compressive stresses, and the parameters of high-temperature creep are calculated using the temperature dependences of the strain.
Только метаданные
Regularities of Crystallographic Texture Formation in Austenitic Steel during Rolling and Tensile Testing
(2025) Krymskaya, O. A.; Isaenkova, M. G.; Osintsev, A. V.; Fesenko,V. A.; Tyutin, V. P.; Bednyakov, D. A.; Крымская, Ольга Александровна; Исаенкова, Маргарита Геннадьевна; Осинцев, Андрей Вениаминович; Фесенко, Владимир Александрович; Тютин, Владислав Павлович
Только метаданные
TEXTURE FORMATION IN BIOMEDICAL SUPERELASTIC Ti – Zr – Nb ALLOYS DURING ROLLING AND SUBSEQUENT HEAT TREATMENT
(2022) Zaripova, M. M.; Isaenkova, M. G.; Fesenko, V. A.; Osintsev, A. V.; Исаенкова, Маргарита Геннадьевна; Фесенко, Владимир Александрович; Осинцев, Андрей Вениаминович
Currently, low-modulus biocompatible Ti – Nb – Zr alloys are considered promising for medical applications. Superelasticity is a property that is mainly governed by the crystallographic direction in single crystals, i.e. by the pre-dominant orientation of grains in polycrystalline objects. In order to control the crystallographic texture in products (such as foils), one should understand how it forms at various stages of thermomechanical processing. This paper compares the following alloys in terms of their crystallographic texture and how it forms: Ti –18Zr – 15Nb (18-15), Ti – 6Zr – 22Nb (22-6), Ti – 22Nb – (1–1.5)O (1O and 1.5O) (at.%). The composition of an alloy influences the stability of the initial β-phase, which tends to decrease with an increase in the concentration of Zr, which replaces Nb. A decreasing stability triggers mar-tensitic transformations during rolling resulting in the formation of a weak blurry texture {112}andlt;011andgt;, as can be observed during deformation of alloy 18-15. Plastic deformation of a stable β-phase leads to the formation of a sharp two-component texture typical of BCC alloys: {110}andlt;001andgt; and {112}andlt;011andgt;, which develops during the rolling of alloys with oxygen and 22-6. Recrystallization of rolled foils (Ɛ = 92%) at 650о C for 0.5 h leads to sharpening of the texture components in the case of samples with a sharp deformation texture (22-6, 1O, 1 .5O) and to a change in texture in the case of samples with a weak deformation texture (18-15). Cyclic tensile tests conducted in three different direc-tions revealed the presence of anisotropy in foils of all compositions. However, alloy 18-15 has the lowest anisotropy. An increase in the Zr concentration contributes to maximum reversible strain in the process of realizing superelas-ticity at room temperature. This research was funded by the Ministry of Science and Higher Education of the Russian Federation; Agreement No. 075-15-2021-1352. © 2022, Ore and Metals Publishing house. All rights reserved.
Только метаданные
On Textural Heredity of Ni-rich Ti–Ni alloy: Specific Features of Transformation and Tensile Behavior
(2023) Ryklina, E. P.; Polyakova, K. A.; Murygin, S. R.; Isaenkova, M. G.; Zaripova, M. M.; Fesenko, V. A.; Исаенкова, Маргарита Геннадьевна; Фесенко, Владимир Александрович