High Temperature

, Volume 56, Issue 5, pp 662–667 | Cite as

Thermophysical Properties of σ Phase in the Ni–V System at High Temperatures

  • E. R. Akhtyamov
  • V. I. GorbatovEmail author
  • V. F. Polev
  • A. A. Kurichenko
  • I. G. Korshunov
  • A. Yu. Zhilyakov


Measurements of the thermal diffusivity and resistivity and an estimate of the thermal conductivity of Ni–62 at % V alloy are presented. It is found that a distinct temperature hysteresis of these properties associated with the mutual transformation of the high- and low-temperature forms of the σ phase is observed in the heating–cooling cycles. This hysteresis is interpreted from the point of view of the formation of the alloy microcrystalline structure. It is established from the anomaly in the temperature dependence that a phase transformation occurs within the temperature interval of 1100–1180 K and it is identified as an order–disorder transition.



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Copyright information

© Pleiades Publishing, Inc. 2018

Authors and Affiliations

  • E. R. Akhtyamov
    • 1
  • V. I. Gorbatov
    • 2
    Email author
  • V. F. Polev
    • 2
  • A. A. Kurichenko
    • 2
  • I. G. Korshunov
    • 2
    • 3
  • A. Yu. Zhilyakov
    • 4
  1. 1.Ural Research Institute of Construction MaterialsChelyabinskRussia
  2. 2.Ural State Mining UniversityYekaterinburgRussia
  3. 3.Institute of Thermal Physics, Ural Branch, Russian Academy of SciencesYekaterinburgRussia
  4. 4.Ural Federal University Named after the First President of Russia B.N. YeltsinYekaterinburgRussia

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