Персона: Ирмагамбетова, Сауле Муханбетовна
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- ПубликацияТолько метаданныеAdvanced structure research methods of amorphous Co69Fe4Cr4Si12B11 microwires with giant magnetoimpedance effect: Part 1 – Crystallization kinetics and crystal growth(2021) Svetogorov, R. D.; Chernavskii, P. A.; Lukyanchuk, A. A.; Shutov, A. M.; Elmanov, G. N.; Kozlov, I. V.; Irmagambetova, S. M.; Prikhodko, K. E.; Елманов, Геннадий Николаевич; Козлов, Илья Владимирович; Ирмагамбетова, Сауле Муханбетовна; Приходько, Кирилл Евгеньевич© 2021 Elsevier B.V.The initial stage processes of nucleation and growth of crystalline phases in Co-based amorphous microwires in a glass shell were studied by processing kinetic curves using various theoretical models. The results of X-ray diffraction for research of the microstructure evolution at Synchrotron Radiation Source and High Resolution Transmission Electron Microscopy were considered. The study of the crystallization process kinetics was carried out by a non-conventional method, in particular based on data of sample magnetization changes over time and with temperature at a unique in situ vibromagnetometer. The analysis of the kinetic curves for isothermal and non-isothermal crystallization process led to the similar conclusions and made it possible to establish the values of the Avrami exponent for the initial stage of surface and bulk crystallization, to establish the dimensionality of crystal growth, and to conclude that there was no nucleation in the process of crystal growth. Based on the analysis of kinetic curves by three methods, the activation energy of the primary crystallization process was determined, its high value is associated with the presence of chromium in the alloy, which determines its nanocrystallization. The microstructure and shape of crystals were analyzed.
- ПубликацияТолько метаданныеAdvanced structure research methods of amorphous Co69Fe4Cr4Si12B11 microwires with giant magnetoimpedance effect: Part 2 – Microstructural evolution and electrical resistivity change during DC Joule heating(2022) Svetogorov, R. D.; Odintsov, V. I.; Petrov, V. G.; Popova, A. V.; Kozlov, I. V.; Elmanov, G. N.; Irmagambetova, S. M.; Prikhodko, K. E.; Козлов, Илья Владимирович; Елманов, Геннадий Николаевич; Ирмагамбетова, Сауле Муханбетовна; Приходько, Кирилл Евгеньевич© 2022 Elsevier B.V.This Part 2 focuses on the processes of atomic regions ordering of the amorphous material and continues study of the processes occurring in Part 1. The formation of pre-crystals / clusters and nanocrystallization of Co-based amorphous microwires during DC Joule heating were investigated, as well as the influence of these processes on the electrical resistance of the samples and the effect of giant magnetoimpedance (GMI). In this paper we investigated the dependence of the change in the maximum response of the GMI diagonal component at different temperatures and holding times in the DC Joule heating process, and discuss the effect of the ductile-brittle transition on the electrical resistance and the GMI effect. Using high-resolution transmission electron microscopy (HR-TEM) and the inverse Fourier transform technique, it was shown that at long exposure during the DC Joule heating, significantly below the crystallization temperature (~ 400 °C), the formation and growth of pre-crystals / clusters occur in various sizes (1 – 8 nm) and shapes. At the initial stage of crystallization, the microwire has three distinct regions of the clusters and nanocrystals formation (surface, pre-surface, and bulk). Moreover, pre-crystals / clusters growth and further bulk formation of nanocrystals (of 10 nm and more) leads to a sharp drop in the electrical resistance and degradation of the GMI microwire diagonal component response. The approach of controlled long-term holding during the DC Joule heating applied in the study allows for creation of various nanoscale structures in an amorphous matrix and provides an opportunity to grow of a given structure in amorphous alloys.
- ПубликацияТолько метаданныеModeling of cracking behavior of CrAlN coatings on silicon during micro- and nanoindentation(2024) Kharkov, M. M.; Tumarkin, A. V.; Prosolov, A. A.; Kabanov, G. A.; Kolodko, D. V.; Tarasov, B. A.; Irmagambetova, S. M.; Kaziev, A. V.; Харьков, Максим Михайлович; Тумаркин, Александр Владимирович; Кабанов, Глеб Алексеевич; Колодко, Добрыня Вячеславич; Тарасов, Борис Александрович; Ирмагамбетова, Сауле Муханбетовна; Казиев, Андрей Викторович
- ПубликацияТолько метаданныеEvaluation of the mechanical properties of CrAlN coatings deposited on WC[sbnd]Co substrates in a magnetron discharge: Experiment and modeling(2025) Xuan, L.; Kharkov, M. М.; Tumarkin, A. V.; Prosolov, A. A.; Kabanov, G. A.; Kolodko, D. V.; Tarasov, B. A.; Irmagambetova, S. M.; Kaziev, A. V.; Харьков, Максим Михайлович; Тумаркин, Александр Владимирович; Кабанов, Глеб Алексеевич; Колодко, Добрыня Вячеславич; Тарасов, Борис Александрович; Ирмагамбетова, Сауле Муханбетовна; Казиев, Андрей Викторович
- ПубликацияТолько метаданныеThermal Stability and Corrosion Resistance in Liquid Lithium of Brazed Tungsten Smart Alloy/RAFM Steel Joints(2025) Kirillova, V. O.; Kirillova,V.O.; Popov, N. S.; Sevryukov, O. N.; Bazhenov, A. A.; Irmagambetova, S. M.; Кириллова, Вероника Олеговна; Попов, Никита Сергеевич; Севрюков, Олег Николаевич; Баженов, Александр Андреевич; Ирмагамбетова, Сауле Муханбетовна; Сучков, Алексей Николаевич