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A Study of the Effect of Ion Irradiation on the Mechanical Properties of Eurofer 97 Steel

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Abstract

The hardness values of samples of ferritic–martensitic steel Eurofer 97 in the initial state and after irradiation with 5.6 MeV Fe2+ ions up to a fluence of 1 × 1016 cm–2 at a temperature of 300°C are compared. The mechanical properties are tested by the method of instrumental indentation using the dynamic mechanical analysis technique. To correct the obtained hardness values, the geometry of the plastic imprints is measured by the method of atomic force microscopy. Irradiation with heavy ions gives rise to an increase in the hardness value in comparison with the initial sample. This indicates a radiation-induced decrease in the plasticity of steel Eurofer 97, which should be taken into account in the case of using it as a construction material for new-generation fusion reactors.

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ACKNOWLEDGMENTS

This work was supported by the Russian Science Foundation, project no. 17-19-01696. The samples of steel Eurofer 97 were irradiated using the facilities of the Center for Collective Use KAMIKS (http:// kamiks.itep.ru/) of the National Research Center Kurchatov Institute–Institute of Theoretical and Experimental Physics. The mechanical properties were analyzed using equipment of the Center for Collective Use “Investigation of Nanostructured, Carbon, and Superhard Materials” (http://www.tisncm.ru/suec/) of the Technological Institute for Superhard and Novel Carbon Materials.

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Authors and Affiliations

  1. Technological Institute for Superhard and Novel Carbon Materials, 142190, Troitsk, Moscow, Russia

    E. V. Gladkikh, K. S. Kravchuk & A. S. Useinov

  2. Moscow Institute of Physics and Technology, 141701, Dolgoprudnyi, Moscow oblast, Russia

    E. V. Gladkikh

  3. Alikhanov Institute of Theoretical and Experimental Physics, National Research Center Kurchatov Institute, 117218, Moscow, Russia

    A. A. Nikitin & S. V. Rogozhkin

  4. National Research Nuclear University MEPhI, 115409, Moscow, Russia

    A. A. Nikitin & S. V. Rogozhkin

Authors
  1. E. V. Gladkikh
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  2. K. S. Kravchuk
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  3. A. S. Useinov
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  4. A. A. Nikitin
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  5. S. V. Rogozhkin
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Correspondence to E. V. Gladkikh.

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Translated by O. Kadkin

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Gladkikh, E.V., Kravchuk, K.S., Useinov, A.S. et al. A Study of the Effect of Ion Irradiation on the Mechanical Properties of Eurofer 97 Steel. J. Surf. Investig. 13, 48–52 (2019). https://doi.org/10.1134/S1027451019010075

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  • DOI: https://doi.org/10.1134/S1027451019010075

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