Abstract
Deformation behavior of ZrO2−Y2O3 ceramics under conditions of diametral compression has been studied by method of digital image correlation. Spatiotemporal patterns of strain localization along the axis of a deformed sample (εxx(x)) and across this axis (εyy(y)) were obtained. It is established that the εxx and εyy deformations accumulated during the diametral compression test are inhomogeneously distributed over the sample. This is manifested by variation of the microstructure characteristics such as the size of the coherently diffracting domains of a tetragonal phase and microstresses and leads to the tetragonal–monoclinic phase transformation. This pattern of strain localization is correlated with the observed inhomogeneity of microstresses arising in the material volume.
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ACKNOWLEDGMENTS
We are grateful to L.M. Molchunova and L.N. Ryzhova (Institute of Strength Physics and Materials Science. Tomsk) for their help in preparing ceramic samples.
Funding
This study was performed and supported in the framework of the Russian Academy of Sciences Program III.23 for 2013—2020, project nos. III.23.1.2 and III.23.2.3.
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Translated by P. Pozdeev
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Sevostyanova, I.N., Sablina, T.Y., Gorbatenko, V.V. et al. Strain Localization during Diametral Compression of ZrO2(Y2O3) Ceramics. Tech. Phys. Lett. 45, 943–946 (2019). https://doi.org/10.1134/S1063785019090281
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DOI: https://doi.org/10.1134/S1063785019090281