Special Aspects of Microstructure, Deformation and Fracture of Bioinert Zirconium and Titanium-Niobium Alloys in Different Structural States

Yu P. Sharkeev, V. V. Skripnyak, V. P. Vavilov, E. V. Legostaeva, A. A. Kozulin, A. O. Chulkov, A. Yu Eroshenko, O. A. Belyavskaya, V. V. Skripnyak, I. A. Glukhov

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The characteristics of microstructure, deformation and fracture of Zr – 1 wt% Nb and Ti – 45 wt% Nb bioinert alloys in the coarse- and ultrafine-grained states are investigated. It is shown that the ultrafine-grained structure formed in them ensures excellent mechanical properties of the alloys and affects the stages of the stress-strain curves and the behavior of the maximum temperature vs. deformation time plot. The formation of an α-phase in the Ti – 45 wt% Nb ultrafine-grained alloy suppresses the linear stage VI characterized by a constant strain hardening coefficient. In stage VII, the strain hardening coefficient rapidly becomes negative, which indicates the material softening prior to its failure.

Original languageEnglish
Pages (from-to)1718-1725
Number of pages8
JournalRussian Physics Journal
Volume61
Issue number9
DOIs
Publication statusPublished - 1 Jan 2019

Keywords

  • fracture
  • IR-imaging
  • strain hardening coefficient
  • stress-strain plots
  • ultrafine-grained structure
  • Zr – 1 wt% Nb and Ti – 45 wt% Nb alloys

ASJC Scopus subject areas

  • Physics and Astronomy(all)

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