Papers by Author: N.N. Shchegoleva

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Authors: V.V. Serikov, N.M. Kleinerman, A.V. Vershinin, E.V. Beloserov, N.V. Mushnikov, G.V. Ivanova, N.N. Shchegoleva, Mikhail A. Uimin
Abstract: Structure and mechanical properties of high-strength alloys on the basis of the Fe-Cr-Co system with W, Ga, Cu and Al additives have been investigated by the Mossbauer technique. It is shown that the magnitude of yield strength is independent of the dopants, whereas the relative elongation is controlled by the process of phase separation in the alloys which is dependent on additions.
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Authors: E.V. Belozerov, N.N. Shchegoleva, G.V. Ivanova, N.V. Mushnikov
Abstract: The structure, mechanical and magnetic properties have been studied for Fe-Cr-Co-based hard magnetic alloys with W and Ga additives, subjected by the quenching and post-deformation hardening. The alloys combine the properties of the hard magnetic material with outstanding mechanical strength and plasticity. Using X-ray and electron microscopy analysis, the reasons and conditions of formation of these properties have been determined.
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Authors: Anatoly Ye. Yermakov, Mikhail A. Uimin, A.A. Mysik, A.Yu. Korobeinikov, A.V. Korolyov, N.V. Mushnikov, T. Goto, V.S. Gaviko, N.N. Shchegoleva
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Authors: N.I. Vlasova, V.S. Gaviko, A.G. Popov, N.N. Shchegoleva, L.A. Stashkova, Dmitriy Gunderov, Xavier Sauvage
Abstract: Equiatomic FePd alloy in the ordered state has been processed by means of high-pressure torsion deformation (HPTD) and then annealed. X-ray diffraction (XRD), transmission electron microscopy (TEM), and magnetic measurements have been carried out. HPTD results in an order-disorder transformation of the initial ordered L10-phase (s.g. P4/mmm) into a disordered fcc phase (s.g. Fm-3m) through the body-centered tetragonal (bct) phase (s.g. I4/mmm). Subsequent annealing restores the L10-phase.
392
Authors: A.N. Gorkovenko, V.O. Vas’kovskiy, V.N. Lepalovskij, N.N. Shchegoleva
Abstract: In the present work, we have studied the structural, magnetic and magnetoresistive properties of Cox(SiO2)100-x and Cox(Al2O3)100-x composite thin films, obtained by magnetron co-sputtering of metallic and insulator targets. It was shown by transmission electron microscopy and by temperature and field dependences of the magnetization that the films have a fine granular structure. For a wide range of compositions an adequate description was possible in frame of the model of homogeneous non-interacting superparamagnetic hexagonal lattice Co particles. Magnetoresistive sensor prototypes were designed on the base of an optimized magnetoresistive Co50(Al2O3)50 composite films
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