Abstract
This work clarifies the origin of the characteristic discontinuities registered during the deformation of the (101̄0) plane of sapphire, by means of depth sensing indentation experiments with a spherical indenter. The sudden increase of the plasticity of the crystal was found to be caused by a twinning process. The calculation and analysis of the distribution of resolved shear stresses under a spherical indenter predicted the features of the surface deformation. The high resolution microscopic examination of the residual impressions confirmed the theoretical prediction.
Original language | English |
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Pages (from-to) | 1063-1065 |
Number of pages | 3 |
Journal | Applied Physics Letters |
Volume | 68 |
Issue number | 8 |
DOIs | |
Publication status | Published - 1996 Dec 1 |
ASJC Scopus subject areas
- Physics and Astronomy (miscellaneous)