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Structural Peculiarities of Niresist Grade Cast Iron after Boriding

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Abstract

This work describes the testing of boride layers on Niresist Type One austenitic cast iron that are obtained after boriding at low temperatures (700°C). The study includes metallographic tests as well as X-ray structural phase analysis and electronic microscopy. According to the results of layer-by-layer X-ray structural phase analysis, FeB is determined as the main phase of the surface boride layer on Niresist Type One cast iron after a ten-hour boriding at 700°C. However, the phase that shows at a depth of 20 μm is Fe2B, whereas the phase that shows at a depth of 40 μm is the underlayer material phase known as γ-phase. In the near-surface part of the diffusion layer, electron microscopy detects a compound corresponding to iron boride Fe2B7 not detected by X-ray structural analysis.

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Authors and Affiliations

  1. OOO Termokhim, 109316, Moscow, Russia

    A. A. Krasulya & S. G. Tsikh

  2. Bauman Moscow State Technical University—National Research University, 105005, Moscow, Russia

    A. S. Pomelnikova & E. V. Tsvetkova

  3. Patrice Lumumba Peoples’ Friendship University of Russia, 117198, Moscow, Russia

    K. O. Bazaleeva

  4. Moscow State University of Technology STANKIN, 127055, Moscow, Russia

    K. O. Bazaleeva

  5. All-Russian Scientific Research Institute Of Aviation Materials—State Research Center of the Russian Federation, 105005, Moscow, Russia

    A. V. Zavodov

Authors
  1. A. A. Krasulya
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  2. A. S. Pomelnikova
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  3. K. O. Bazaleeva
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  4. A. V. Zavodov
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  5. E. V. Tsvetkova
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  6. S. G. Tsikh
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Correspondence to A. A. Krasulya.

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Translated by S. Kuznetsov

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Krasulya, A.A., Pomelnikova, A.S., Bazaleeva, K.O. et al. Structural Peculiarities of Niresist Grade Cast Iron after Boriding. Steel Transl. 53, 428–432 (2023). https://doi.org/10.3103/S0967091223050108

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  • DOI: https://doi.org/10.3103/S0967091223050108

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