Deformation twinning in corundum
- 1 February 1966
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 13 (122) , 379-393
- https://doi.org/10.1080/14786436608212616
Abstract
Deformation twinning on rhombohedral planes was detected in corundum crystals fractured in bending at temperatures as low as − 196°c. The crystallographic parameters of this twinning were determined completely: s=0·202. Deformation markings, tentatively attributed to basal twinning, were detected on some crystals fractured above 1000°c. Twins were observed to be associated with fracture faces, and in some cases twin-sub-grain and twin-twin intersections, which probably nucleated fracture, could be found.Keywords
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