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This article is cited in 2 scientific papers (total in 2 papers)
Physical science of materials
On the issue of stability of the metastable $\omega$ phase in pseudo-single-crystalline zirconium
L. Yu. Egorova, Yu. V. Khlebnikova, V. P. Pilyugin Institute of Metal Physics, Ural Division of the Russian Academy of Sciences, Ekaterinburg
Abstract:
Pseudo-single-crystalline zirconium samples were tested in a Bridgman chamber at a temperature of 20, 70, 100, and 300$^\circ$C under the same loading conditions. The aim of these tests was to examine the possibility of preservation of the metastable $\omega$ phase at elevated temperatures. It was found that stable structural configurations emerge in the process of warm deformation as a result of formation of equilibrium interphase boundaries and oriented nucleation and growth of the $\omega$ phase. These configurations enhance the stability of the $\omega$ phase after cooling and load removal. Disperse zirconium hydride particles of a variable composition ($\delta$-ZrH$_{2-x}$) were identified in the sample tested at 300$^\circ$C. Its high hardness, which is comparable to that of the sample tested at room temperature, is attributable to the presence of these particles.
Keywords:
pseudo-single crystal zirconium, megaplastic warm deformation, high hydrostatic pressure, $\alpha\leftrightarrow\omega$ phase transitions, recrystallization.
Received: 19.03.2019 Revised: 19.03.2019 Accepted: 21.05.2019
Citation:
L. Yu. Egorova, Yu. V. Khlebnikova, V. P. Pilyugin, “On the issue of stability of the metastable $\omega$ phase in pseudo-single-crystalline zirconium”, Zhurnal Tekhnicheskoi Fiziki, 90:1 (2020), 104–109; Tech. Phys., 65:1 (2020), 96–101
Linking options:
https://www.mathnet.ru/eng/jtf5414 https://www.mathnet.ru/eng/jtf/v90/i1/p104
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