On the Issue of Stability of the Metastable ω Phase in Pseudo-Single-Crystalline Zirconium
Pseudo-single-crystalline zirconium samples were tested in a Bridgman chamber at a temperature of 20, 70, 100, and 300°C under the same loading conditions. The aim of these tests was to examine the possibility of preservation of the metastable ω phase at elevated temperatures. It was found that stab...
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Published in | Technical physics Vol. 65; no. 1; pp. 96 - 101 |
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Main Authors | , , |
Format | Journal Article |
Language | English |
Published |
Moscow
Pleiades Publishing
2020
Springer Nature B.V |
Subjects | |
Online Access | Get full text |
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Summary: | Pseudo-single-crystalline zirconium samples were tested in a Bridgman chamber at a temperature of 20, 70, 100, and 300°C under the same loading conditions. The aim of these tests was to examine the possibility of preservation of the metastable ω 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 ω phase. These configurations enhance the stability of the ω phase after cooling and load removal. Disperse zirconium hydride particles of a variable composition (δ-ZrH
2 –
x
) were identified in the sample tested at 300°C. Its high hardness, which is comparable to that of the sample tested at room temperature, is attributable to the presence of these particles. |
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ISSN: | 1063-7842 1090-6525 |
DOI: | 10.1134/S1063784220010041 |