The Influence of Microstructure on Oxidation Rate Of V–Cr–Ta–Zr Alloy During Its Chemical-Heat Treatment
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Using the methods of scanning (electron backscatter diffraction) and transmission electron microscopy, an investigation of the influence of microstructure of a V–Cr–Ta–Zr alloy on the rate of surface oxide scale formation in the course of its chemical-heat treatment using oxidation in air is performed. It is shown that a preliminary plastic deformation, ensuring a multiple increase in the density of dislocations and misorientation boundaries, results in a 10% thicker surface oxide layer and a respective increase in the concentration of oxygen in the alloy during the final stage of its chemical-heat treatment. The role of this factor in developing the chemical-heat treatment regimes is discussed.
Keywordsvanadium alloys thermomechanical treatment grain and defect structure chemical-heat treatment oxygen concentration oxidation rate transmission and scanning electron microscopy
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- 1.E. Fromm and E. Gebhardt, Gases and Carbon in Metals, Springer Verlag, Berlin (1976).Google Scholar
- 2.V. K. Grigorovich and E. N. Sheftel, Dispersion Hardening of Refractory Metals [in Russian], Nauka, Moscow (1980).Google Scholar
- 5.A. N. Tymentsev, A. D. Korotaev, Yu. P. Pinzhin, et al., J. Nucl. Mater., 329–333, 429–433 (2004).Google Scholar
- 8.A. N. Tyumentsev, A. D. Korotaev, Yu. P. Pinzhin, et al., J. Nucl. Mater., 367–370, 853–857 (2007).Google Scholar
- 10.V. M. Chernov, M. M. Potapenko, V. A. Drobyshev, et al., Nucl. Mater. Energy, 3–4, 17–21 (2015).Google Scholar
- 12.J. M. Chen, T. Muroga, S. Y. Qiu, et al., J. Nucl. Mater., 329–333, 401–405 (2004).Google Scholar