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Plastic Deformation of Corundum Single Crystals
Author(s) -
KlassenNeklyudova M. V.,
Govorkov V. G.,
Urusovskaya A. A.,
Voinova N. N.,
Kozlovskaya E. P.
Publication year - 1970
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.19700390236
Subject(s) - corundum , materials science , deformation (meteorology) , yield (engineering) , sapphire , strain rate , impurity , crystallography , composite material , mineralogy , metallurgy , optics , geology , chemistry , laser , physics , organic chemistry
The stress‐strain curves and the defect structure of corundum single crystals (sapphire and ruby) were studied. The influence of impurity (Cr) presence, crystallographic orientation, temperature, and deformation rate was investigated. Chromium makes corundum harder and causes a yield point phenomenon. The yield point was also increased by the transition from 60° to 90° orientation of the specimens, by lowering the temperature, and by an increase in the deformation rate. In 60°‐specimens the deformation occurs by means of gliding on basal planes in 〈11 2 0〉 and 〈10 1 0〉 directions. In 90°‐samples beside this one gliding in (10 1 0), (10 1 1), (20 2 1) and (22 4 3) is found.