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Russian Physics Journal

, Volume 61, Issue 8, pp 1536–1540 | Cite as

Thermal Stability of the Microstructure and Mechanical Properties of the Ferritic-Martensitic Steel EK-181

  • K. V. Almaeva
  • N. A. Polekhina
  • I. Yu. Litovchenko
  • A. N. Tyumentsev
  • V. M. Chernov
  • M. V. Leont’eva-Smirnova
Article
  • 11 Downloads

Thermal stability of the microstructure and high-temperature mechanical properties of the low-activate 12% Cr ferritic-martensitic steel EK-181 are studied at temperatures from 700 to 800°C. It is shown that after traditional heat treatment and annealing at temperatures from 700 to 800°C, the ferritic-martensitic structure of the steel is retained and the density of coarse-dispersed M23C6 particles is increased. After annealing at T = 800°C, the initial recrystallization stages with the formation of new submicrocrystalline ferritic grains are detected. An increase in the annealing temperature from 700 to 800°C leads to a decrease in the strength properties of the steel. Wherein, the character of the temperature dependence of the strength at temperatures from 700 to 800°C is similar to that observed at lower temperatures (from 500 to 700°C).

Keywords

ferritic-martensitic steel heat treatment thermal stability mechanical properties transmission electron microscopy 

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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2018

Authors and Affiliations

  • K. V. Almaeva
    • 1
    • 2
  • N. A. Polekhina
    • 1
    • 2
  • I. Yu. Litovchenko
    • 1
    • 2
  • A. N. Tyumentsev
    • 1
    • 2
  • V. M. Chernov
    • 3
  • M. V. Leont’eva-Smirnova
    • 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.JSC “A. A. Bochvar High-Technology Research Institute of Inorganic Materials”MoscowRussia

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