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Metal Science and Heat Treatment

, Volume 60, Issue 7–8, pp 450–453 | Cite as

Application of Complex Thermochemical Treatment for Reinforcing High-Strength Precipitation-Hardening Heat-Resistant Steel Microalloyed with REM

  • A. E. Smirnov
  • R. S. Fakhurtdinov
  • M. Yu. Semenov
  • V. I. Gromov
  • N. A. Kupryakova
  • G. S. Seval’nev
THERMOCHEMICAL TREATMENT
  • 8 Downloads

Results of a complex thermochemical treatment of test specimens from different heats of a novel high-strength heat-resistant precipitation-hardening steel microalloyed with REM are presented. The optimum chemical composition of the steel is determined with the aim to provide precipitation hardening after vacuum carburizing. In the process of finishing nitriding in glow discharge the surface hardness of the new steel increases substantially at inconsiderable decrease in the hardness of the core. The developed modes of complex thermochemical treatment exclude the appearance of such flaws as grain boundary net and excess retained austenite.

Key words

complexly alloyed steels rare earth metals precipitation hardening vacuum carburizing nitriding in glow discharge 

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Copyright information

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

Authors and Affiliations

  • A. E. Smirnov
    • 1
  • R. S. Fakhurtdinov
    • 1
  • M. Yu. Semenov
    • 1
  • V. I. Gromov
    • 2
  • N. A. Kupryakova
    • 2
  • G. S. Seval’nev
    • 1
    • 2
  1. 1.N. É. Bauman Moscow State Technical UniversityMoscowRussia
  2. 2.Federal State Unitary Enterprise “VIAM”MoscowRussia

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