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Influence of Chemical-Heat Treatment on Thermal Stability of Microstructure, Mechanical Properties and Fracture of V–Cr–Ta–Zr Alloy

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A study of the features of structural-phase state, thermal stability, characteristics of mechanical properties and fracture behavior of V–Cr–Ta–Zr alloy after chemical-heat treatment by the method of nonequilibrium internal oxidation is performed. It is found out that, in contrast to chemical-heat treatment of the alloy in a defect state, the effect of oxygen introduced into this material with a stabilized structure is observed only at its high concentrations. At high oxygen concentrations ensuring the maximum binding of Zr into the particles based on ZrO2, the alloy under study demonstrates a high level of thermal stability and strength properties. These effects are associated with the use of disperse strengthening according to the Orowan mechanism by nanosized ZrO2 particles characterized by high thermal stability. The concentration and nature of the distribution of oxygen predetermine the spatial distribution of nanosized ZrO2 particles formed during chemical-heat treatment, which manifests itself in the fracture behavior of the material at different temperatures.

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Authors and Affiliations

  1. Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Sciences, Tomsk, Russia

    I. V. Smirnov, K. V. Grinyaev, A. N. Tyumentsev, A. D. Korotaev, Yu. P. Pinzhin, I. A. Ditenberg, V. M. Chernov & M. M. Potapenko

Authors
  1. I. V. Smirnov
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  2. K. V. Grinyaev
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  3. A. N. Tyumentsev
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  4. A. D. Korotaev
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  5. Yu. P. Pinzhin
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  6. I. A. Ditenberg
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  7. V. M. Chernov
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  8. M. M. Potapenko
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Corresponding author

Correspondence to I. V. Smirnov.

Additional information

Translated from Izvestiya Vysshikh Uchebnykh Zavedenii, Fizika, No. 7, pp. 36–42, July, 2021.

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Smirnov, I.V., Grinyaev, K.V., Tyumentsev, A.N. et al. Influence of Chemical-Heat Treatment on Thermal Stability of Microstructure, Mechanical Properties and Fracture of V–Cr–Ta–Zr Alloy. Russ Phys J 64, 1212–1218 (2021). https://doi.org/10.1007/s11182-021-02446-8

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  • DOI: https://doi.org/10.1007/s11182-021-02446-8

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