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Structure of the Fe63.5Ni10Cu1Nb3Si13.5B9 Alloy Nanocrystallized in the Presence of Tensile Stresses

  • ELECTRICAL AND MAGNETIC PROPERTIES
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Abstract

The structure of the Fe63.5Ni10Cu1Nb3Si13.5B9 alloy, which is a classic alloy of the FINEMET type with 10 at % Ni substituted for Fe, has been studied after crystallization in the presence of tensile stresses. It has been shown that, upon the crystallization of the alloy (520°C) both in the presence of a tensile load and without it, nanocrystals of an α-(Fe, Ni)Si solid solution and of the Fe3Si phase are formed with an increase in the duration of annealing from 10 min to 1 hour. When the length of the annealing is further increased from 1 to 4 hours, a tetragonal phase Fe3NiSi1.5 appears in the alloy. A relationship between the structural state (phase composition) of the Fe63.5Ni10Cu1Nb3Si13.5B9 alloy and its magnetic properties and the type of the induced magnetic anisotropy has been shown. The growth of the coercive force, which was previously observed in samples of this alloy as the duration of the annealing was increased to 4 hours, is therefore associated with the appearance of a tetragonal phase in the alloy. The transverse magnetic anisotropy, which is induced in the alloy in the process of nanocrystallizing annealing in the presence of a tensile load, is associated with the formation of nanocrystals of the α-(Fe, Ni)Si solid solution and of the Fe3Si phase with a negative magnetostriction.

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ACKNOWLEDGMENTS

The electron-microscopic studies were carried out in the Division of Electron Microscopy of the Center of Collaborative Access, Institute of Metal Physics, Ural Branch, Russian Academy of Sciences.

Funding

The work was carried out within the framework of the state task of the Ministry of Education and Science of the Russian Federation (theme “Magnit,” No. AAAA-A18-118020290129-5) and project No. 18-10-25 of the Program of the Ural Branch, Russian Academy of Sciences.

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Authors and Affiliations

  1. Mikheev Institute of Metal Physics, Ural Branch, Russian Academy of Sciences, 620008, Ekaterinburg, Russia

    V. A. Lukshina, N. V. Dmitrieva, E. G. Volkova & D. A. Shishkin

  2. Ural Federal University Named after the First President of Russia B.N. Yeltsin, 620002, Ekaterinburg, Russia

    V. A. Lukshina & D. A. Shishkin

Authors
  1. V. A. Lukshina
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  2. N. V. Dmitrieva
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  3. E. G. Volkova
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  4. D. A. Shishkin
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Correspondence to V. A. Lukshina.

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Translated by S. Gorin

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Lukshina, V.A., Dmitrieva, N.V., Volkova, E.G. et al. Structure of the Fe63.5Ni10Cu1Nb3Si13.5B9 Alloy Nanocrystallized in the Presence of Tensile Stresses. Phys. Metals Metallogr. 120, 1145–1151 (2019). https://doi.org/10.1134/S0031918X19120111

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  • DOI: https://doi.org/10.1134/S0031918X19120111

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