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- Title
Nucleation of the Plasticity at Nanodeformation of the Y<sub>3</sub>Al<sub>5</sub>O<sub>12</sub> Yttrium-Aluminum Garnet.
- Authors
Dub, S. N.; Yavetskiy, R. P.; Belous, V. A.; Dolzhenkova, E. F.; Tolmacheva, G. N.; Sidletskiy, O. Ts.
- Abstract
The nanoindentation in the continuous stiffness measurement (CSM) mode was used to study the nucleation of the plasticity at the nanodeformation of the yttrium-aluminium garnet (YAG) having a low ((111) YAG single crystal after the annealing at the temperature of 1300°C) and a high (polycrystalline yttrium-aluminium garnet with a grain size of ~ 20 μm after the mechanical polishing) density of dislocations. For a sample having a high dislocations density a smooth elastoplastic transition was observed in the nanocontact as a result of the motion and multiplication of dislocations that are already present in the sample. For (111) YAG single crystal after annealing at the temperature of 1300°C an abrupt elastoplastic transition (pop-in) caused by a homogeneous nucleation of dislocations in the region under the contact was observed.
- Publication
Journal of Superhard Materials, 2018, Vol 40, Issue 2, p75
- ISSN
1063-4576
- Publication type
Article
- DOI
10.3103/S1063457618020016