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Russian Metallurgy (Metally)

, Volume 2017, Issue 10, pp 858–861 | Cite as

Effect of chromium on the structure evolution in single-phase Ni–Cr alloys during high-pressure torsion

  • Yu. G. Krasnoperova
  • M. V. Degtyarev
  • T. I. Chashchukhina
  • L. M. Voronova
Structure and Properties of the Deformed State

Abstract

The evolution of the structure and the hardness of single-phase Ni–Cr alloys with 2–12.5 at % Cr is studied during high-pressure torsion. It is established that the hardness of the alloys, unlike pure nickel, continuously increases in the entire true strain range 0.2–12. Alloying with chromium is shown to substantially inhibit the formation of a submicrocrystalline structure and to enhance the refinement of microcrystallites.

Keywords

high-pressure torsion Ni–Cr alloy microstructure hardness dynamic recovery 

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Copyright information

© Pleiades Publishing, Ltd. 2017

Authors and Affiliations

  • Yu. G. Krasnoperova
    • 1
  • M. V. Degtyarev
    • 1
  • T. I. Chashchukhina
    • 1
  • L. M. Voronova
    • 1
  1. 1.Institute of Metal Physics, Ural BranchRussian Academy of SciencesYekaterinburgRussia

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