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Nanoindentation Study of the Effect of Low-Temperature Ion Irradiation on the Hardness of a Ferritic–Martensitic EK-181 Steel

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Russian Metallurgy (Metally) Aims and scope

Abstract

The hardness of a ferritic–martensitic steel EK-181 after ion irradiation to a maximum damaging dose of ~50 dpa in the temperature range 250–400°C is investigated. Nanoindentation is used to measure the mechanical properties. The hardnesses of the layer damaged by ions and that of the undamaged bulk material are found. At temperatures below 300°C, softening at a dose below 10 dpa and hardening at high doses of ~50 dpa are observed. Hardening is detected over the entire dose range at 400°C. The maximum hardness of the sample irradiated to ~50 dpa at 400°C is 1.7 GPa.

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ACKNOWLEDGMENTS

Irradiation and atom-probe tomography analysis were performed at the Center of the Collaborative Access KAMIKS (http://kamiks.itep.ru), Institute for Theoretical and Experimental Physics, National Research Center Kurchatov Institute; nanoindantation was carried out at the Technological Institute for Superhard and Novel Carbon Materials (http://www.tisncm.ru/suec/suec.html).

Funding

This work was supported by the Russian Scientific Foundation, project no. 17-19-01696.

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Authors and Affiliations

  1. Alikhanov Institute for Theoretical and Experimental Physics, National Research Centre Kurchatov Institute, Moscow, Russia

    A. A. Nikitin, S. V. Rogozhkin, T. V. Kulevoi, P. A. Fedin & N. A. Iskandarov

  2. National Research Nuclear University, Moscow, Russia

    A. A. Nikitin & S. V. Rogozhkin

  3. Technological Institute for Superhard and Novel Carbon Materials, Troitsk, Moscow, Russia

    K. S. Kravchuk & E. V. Gladkikh

  4. Bochvar High-Technology Scientific Research Institute for Inorganic Materials, Moscow, Russia

    M. V. Leont’eva-Smirnova & E. M. Mozhanov

Authors
  1. A. A. Nikitin
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  2. S. V. Rogozhkin
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  3. T. V. Kulevoi
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  4. P. A. Fedin
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  5. N. A. Iskandarov
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  6. K. S. Kravchuk
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  7. E. V. Gladkikh
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  8. M. V. Leont’eva-Smirnova
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  9. E. M. Mozhanov
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Correspondence to A. A. Nikitin.

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Translated by T. Gapontseva

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Nikitin, A.A., Rogozhkin, S.V., Kulevoi, T.V. et al. Nanoindentation Study of the Effect of Low-Temperature Ion Irradiation on the Hardness of a Ferritic–Martensitic EK-181 Steel. Russ. Metall. 2019, 1184–1189 (2019). https://doi.org/10.1134/S0036029519110077

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  • DOI: https://doi.org/10.1134/S0036029519110077

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