Metal Science and Heat Treatment

, Volume 61, Issue 7–8, pp 463–471 | Cite as

Grain Boundary Embrittlement of Steels of Vver-1000 Reactor Vessels Under Long-Term Operation

  • E. A. KuleshovaEmail author
  • D. A. Mal’tsev
  • S. V. Fedotova

Results of fractographic analysis and Auger electron spectroscopy of materials of vessels of VVER-1000 reactors obtained at the “Kurchatov Institute” Research Center are systematized. Comparative analysis of the effect of the operating factors on the level of grain boundary embrittlement in the matrix metal and welded joints is performed. The contribution of grain boundary embrittlement into the total radiation-induced embrittlement of the weld metal of the vessels is determined.

Key words

reactor vessel matrix metal weld metal radiation embrittlement thermal embrittlement embrittlement mechanisms grain boundary fracture grain boundary segregation fractographic studies Auger electron spectroscopy 


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Copyright information

© Springer Science+Business Media, LLC, part of Springer Nature 2019

Authors and Affiliations

  • E. A. Kuleshova
    • 1
    • 2
    Email author
  • D. A. Mal’tsev
    • 1
  • S. V. Fedotova
    • 1
  1. 1.“Kurchatov Institute” National Research CenterMoscowRussia
  2. 2.“MIFI” National Nuclear Research UniversityMoscowRussia

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