Influence of Surface Ultrafine Grain Structure on Cavitation Erosion Damage Resistance

  • Yaroslav Kyryliv
  • V. Kyryliv
  • Nataliya Sas
Conference paper
Part of the Springer Proceedings in Physics book series (SPPHY, volume 221)


Ultrafine-grained structures (UFGS) are formed after severe plastic deformation (SPD) using the method of vibration-centrifugal hardening (VCH). This method provides greater depth due to the significant mass of the hardening tool. Under optimal conditions, vibration-centrifugal hardening during cold plastic deformation forms an ultrafine-grained ferritic structure with a grain size of 190 nm and high dislocation density and reaches microhardness of 8.9 GPa and a hardening depth of 7 mm on the 40Kh steel surface. The dependence of the corrosion and electrochemical characteristics as well as cavitation erosion damage resistance on the processing modes is shown. However, vibration-centrifugal hardening increases the cavitation erosion damage resistance by two times after stabilizing the destruction rate and by ten times at the incubation time.


Vibration-centrifugal hardening Severe plastic deformation Ultrafine-grained structure Resistance Cavitation erosion damage 


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Copyright information

© Springer Nature Switzerland AG 2019

Authors and Affiliations

  • Yaroslav Kyryliv
    • 1
  • V. Kyryliv
    • 2
  • Nataliya Sas
    • 3
  1. 1.Lviv State University of Life SafetyLvivUkraine
  2. 2.Karpenko Physico-Mechanical Institute of the NAS of UkraineLvivUkraine
  3. 3.Stepan Gzhytskyi National University of Veterinary Medicine and BiotechnologiesLvivUkraine

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