Plastic deformation of MgO(A12O2)1·1spinel at 0·28TMpreliminary results
- 1 January 1980
- journal article
- other
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 41 (1), 129-136
- https://doi.org/10.1080/01418618008241836
Abstract
Prism-shaped single crystals of MgO(Al2O3)n spinel (n < 1.1) have been compressed to significant plastic strain at a temperature of 400°C (∼0·28 TM) in controlled experiments under a superimposed hydrostatic pressure of 1·4 GPa. Compression of crystals approximately parallel to , and resulted in simple yield behaviour at axial stress differences of 1940, 3720, and 4300 MPa respectively. Well defined and broadly distributed slip lines on polished surfaces and stress-optical effects of slip bands have permitted identification of the following operating slip families: Typically, the members of the above slip families with the highest Schmid factors operated. Clear evidence for active cross-slip on the system {100} was observed to nucleate from the {111} slip bands in the ∼ specimen.Keywords
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