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Nanoscale Mesoscopic Structural States in Low-Alloy Steels for Martensitic Phase Formation and Low-Temperature Toughness Enhancement

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Abstract

The paper analyzes the nature of constant low-temperature impact toughness in low-carbon low-alloy 10Mn2VNbAl steel after helical rolling at 850°C. The analysis shows that when rolled, the steel changes the electronic spectrum via shifting its low-energy states in the reciprocal space of lattice curvature to higher levels which are vacant in the initial material. Such interstitial states provide the growth of interstitial bainite islands capable for adaptive rotations under shock loads, and this makes the rolled steel constant in low-temperature impact toughness up toT = –70°C.

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Funding

The work was performed under Fundamental Research Program of the State Academies of Sciences for 2013–2020 (project No. III.23.1.1) and supported by RFBR (projects Nos. 17-01-00691 and 18-08-00516).

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Authors and Affiliations

  1. Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, 634055, Tomsk, Russia

    V. E. Panin, I. A. Shulepov, L. S. Derevyagina, S. V. Panin, A. I. Gordienko & I. V. Vlasov

  2. National Research Tomsk Polytechnic University, 634050, Tomsk, Russia

    V. E. Panin & S. V. Panin

  3. National Research Tomsk State University, 634050, Tomsk, Russia

    V. E. Panin

Authors
  1. V. E. Panin
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  2. I. A. Shulepov
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  3. L. S. Derevyagina
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  4. S. V. Panin
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  5. A. I. Gordienko
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  6. I. V. Vlasov
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Corresponding author

Correspondence to S. V. Panin.

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Russian Text © The Author(s), 2019, published in Fizicheskaya Mezomekhanika, 2019, Vol. 22, No. 6, pp. 5–13.

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Panin, V.E., Shulepov, I.A., Derevyagina, L.S. et al. Nanoscale Mesoscopic Structural States in Low-Alloy Steels for Martensitic Phase Formation and Low-Temperature Toughness Enhancement. Phys Mesomech 23, 376–383 (2020). https://doi.org/10.1134/S1029959920050021

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  • DOI: https://doi.org/10.1134/S1029959920050021

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