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Effect of Crystal Lattice Microstrain on the Parameters of Grain-Boundary Ensembles in Alloys with L12 Superstructure

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Bulletin of the Russian Academy of Sciences: Physics Aims and scope

Abstract

Crystal lattice microstrain in ordering alloys with L12 superstructure (Pd3Fe and Ni3Mn) is studied via X-ray diffraction analysis. Spectra of special boundaries in grain-boundary ensembles and angles of deviation of special boundaries from the parameters of special boundaries in the model of a coincident site lattice are studied via scanning electron microscopy and backscattered electron diffraction. The microstrain of a crystal lattice rises as the degree of long-range atomic order in the alloys falls. This increases the fraction of special grain boundaries in the grain-boundary ensemble and the angles of deviation of these boundaries from the parameters of special boundaries in the model of a coincident site lattice.

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Authors and Affiliations

  1. Surgut State University, 628400, Surgut, Khanty-Mansiysk Autonomous Okrug–Yugra, Tyumen oblast, Russia

    E. V. Konovalova

  2. Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, 634021, Tomsk, Russia

    O. B. Perevalova

Authors
  1. E. V. Konovalova
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  2. O. B. Perevalova
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Correspondence to E. V. Konovalova.

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Translated by I. Obrezanova

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Konovalova, E.V., Perevalova, O.B. Effect of Crystal Lattice Microstrain on the Parameters of Grain-Boundary Ensembles in Alloys with L12 Superstructure. Bull. Russ. Acad. Sci. Phys. 85, 1022–1025 (2021). https://doi.org/10.3103/S1062873821090203

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  • DOI: https://doi.org/10.3103/S1062873821090203

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