The Influence of Dimesions and Phase State of Structural Elements on Mechanical Properties of Binary Alloys of the Ti–Nb and Zr–Nb Systems

  • A. Yu. EroshenkoEmail author
  • Yu. P. Sharkeev
  • I. A. Glukhov
  • P. V. Uvarkin
  • A. M. Mairambekova
  • A. I. Tolmachev

The results of investigation of the influence of the structural element size and phase state of the Ti – 45 wt.% Nb and Zr – 1 wt.% Nb binary alloys on their mechanical properties are presented. The structural states of the alloys with the structural elements of different dimensions were formed from the ultrafine-grained state via annealing. The curves of dependence of the yield strength and microhardness on the average size of the structural elements, d1/2, are obtained using the Hall–Petch relation. It is shown that for the Zr – 1 wt.% Nb alloy, the Hall–Petch relation is fulfilled in the entire range of sizes under study, from ultrafine-grained to finegrained states 0.2–1.9 μm. For the Ti – 45 wt.% Nb alloy, in the analysis of the Hall–Petch relationship within the structural element size range 0.43–45 μm, its phase composition is taken into consideration, specifically, the presence of dispersion-strengthened β-phase grains, α-phase subgrains, nonequilibrium nanosized ω- phase, and the bimodal grain-subgrain structure.


Ti – 45 wt.% Nb and Zr – 1 wt.% Nb alloys microstructure structure elements size yield strength microhardness phase composition 


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

Authors and Affiliations

  • A. Yu. Eroshenko
    • 1
    Email author
  • Yu. P. Sharkeev
    • 1
    • 2
  • I. A. Glukhov
    • 1
  • P. V. Uvarkin
    • 1
  • A. M. Mairambekova
    • 3
  • A. I. Tolmachev
    • 1
  1. 1.Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of SciencesTomskRussia
  2. 2.National Research Tomsk Polytechnic UniversityTomskRussia
  3. 3.National Research Tomsk State UniversityTomskRussia

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