Plastic deformation and fracture of quartz at atmospheric pressure
- 1 May 1967
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine
- Vol. 15 (137) , 931-938
- https://doi.org/10.1080/14786436708221637
Abstract
Crystals of synthetic quartz have been strained at a compression rate of 3 × 10−4 sec−1 in air at atmospheric pressure. Slip line and stress birefringence evidence is reported for plastic deformation by slip on the system (0001) [1120] at temperatures of 550°C and above. Above 700°C additional slip systems become operative. The spacings of self-made Wallner lines on fracture surfaces indicate that sources of supersonic sound exist during crack propagation at all temperatures from 25°C to 850°C.Keywords
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