Russian Physics Journal

, Volume 62, Issue 4, pp 698–704 | Cite as

Microstructure and Mechanical Properties of Austenitic Steel EK-164 After Thermomechanical Treatments

  • S. A. AkkuzinEmail author
  • I. Yu. Litovchenko
  • A. N. Tymentsev
  • V. M. Chernov

The influence of thermomechanical treatments, including low-temperature and subsequent warm deformation, on the microstructure and mechanical properties of an austenitic reactor steel (Russian Grade EK-164) is investigated. It is shown that low-temperature plastic deformation (after cooling in liquid nitrogen) gives rise to the formation of a high density of microtwins. In the course of subsequent warm deformation (at T = 600 or 700° C) the localized deformation bands, having an internal fragmented nano-sized structure, propagate in the microtwin structure. It is demonstrated that these microstructure characteristics ensure a multiple (by 3–5 factors) yield strength increase at 20 and 650°C.


austenitic reactor steel EK-164 thermomechanical treatmment mechanical properties transmission electron microscopy twinning strain localization 


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  1. 1.
    N. M. Mitrofanova, M. G. Bogolepov, F. G. Reshetnikov, Yu. K. Bibishvili, T. A. Topilina, N. K. Zhitkov, V. N. Voyevodin, Yu. I. Kazennov, and V. M. Zakharkin, Austenitic steel , RF Patent No. 2068022 [in Russian]. Appl. 17.06.1994; Publ. 20.10.1996.Google Scholar
  2. 2.
    V. S. Ageev, Y. P. Budanov, A. G. Ioltukhovskii, et al., Izv. VUZov. Yadern. Energ., No. 2, 210–218 (2009).Google Scholar
  3. 3.
    A. V. Tselischev, V. S. Ageev, Yu. P. Budanov et al., Atomic energy, 108, Iss. 4, 217–223 (2010).Google Scholar
  4. 4.
    I. A. Portnykh, A. V. Kozlov, V. L. Panchenko, et al., The Phys. Met. Metallogr., 113, No. 5, 520– 531 (2012).ADSCrossRefGoogle Scholar
  5. 5.
    N. M. Mitrofanova, M. V. Leontieva-Smirnova, Yu. A. Ivanov, T. A. Churyumova, B. A. Vasiliev, M. R. Farakshin, O. M. Saraev, N. N. Oshkanov, V. V. Chuev, S. A. Bychkov, and M. I. Ilyashik, Fast Neutron Reactor Fuel Cell, a utility model to RF Patent No. 127235 [in Russian]. Appl. 20.11.2012; Publ. 20.04.2013. Bull. No. 11, p. 10.Google Scholar
  6. 6.
    I. Yu. Litovchenko, S. A. Akkuzin, N. A. Polekhina, et al., Russ. Phys. J., 59, No. 6, 782–787 (2016).CrossRefGoogle Scholar
  7. 7.
    S. A. Akkuzin, I. Yu. Litovchenko, and A. N. Tyumentsev, AIP Conf. Proc., 1909, 020001-1–020001-4 (2017).Google Scholar
  8. 8.
    S. A. Akkuzin and I. Yu. Litovchenko, Tambov University Vestnik Ser.: Natural and Physical Sciences [in Russian], 23, No. 122, 11–14 (2018).Google Scholar
  9. 9.
    P. J. Brofman and G. S. Ansell, Metallurg. Trans. A, 9A, 879–880 (1978).ADSCrossRefGoogle Scholar
  10. 10.
    O. P. Maksimkin, Stacking Faults, their Energy and Influence on Properties of Irradiated Metals and Alloys [in Russian], Almaty (2010).Google Scholar
  11. 11.
    J. Lu, L. Hultman, E. Holmstrom, et al., Acta Mater., 111, 39–45 (2016).CrossRefGoogle Scholar
  12. 12.
    I. Yu. Litovchenko, N. V. Shevchenko, A. N. Tymentsev, et al., Fiz. Mezomekh., Spec. issue, 9, 137–140 (2006).Google Scholar
  13. 13.
    I. Yu. Litovchenko, A. N. Tymentsev, N. V. Shevchenko, et al., The Phys. Met. Metallogr., 112, No. 4, 412–423 (2011). – DOI:
  14. 14.
    C. Donadille, R. Valle, P. Dervin, et al., Acta Metallurg., 37, No. 6, 1547– 1571 (1989).CrossRefGoogle Scholar
  15. 15.
    I. Gutierrez-Urrutia and D. Raabe, Acta Mater., 59, 6449–6462 (2011).CrossRefGoogle Scholar
  16. 16.
    L.-Å. Norström, Met. Sci., 11, 208–212 (1977).CrossRefGoogle Scholar

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Authors and Affiliations

  • S. A. Akkuzin
    • 1
    • 2
    Email author
  • I. Yu. Litovchenko
    • 1
    • 2
  • A. N. Tymentsev
    • 1
    • 2
  • V. M. Chernov
    • 3
  1. 1.National Research Tomsk State UniversityTomskRussia
  2. 2.Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of SciencesTomskRussia
  3. 3.AO Bochvar High-Technology Research Institute of Inorganic MaterialsMoscowRussia

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