Cleavage Cracks and Dislocations in LiF Crystals
- 1 April 1958
- journal article
- Published by AIP Publishing in Journal of Applied Physics
- Vol. 29 (4) , 601-607
- https://doi.org/10.1063/1.1723237
Abstract
It is shown that dislocations are nucleated ahead of the tips of cracks that move slower than ∼6×103 cm/sec in LiF crystals. The motion of cracks that move slower than ∼3×103 cm/sec is unstable; that is, the velocity oscillates. About 2×105 cm/sec is the terminal velocity for (100) cleavage cracks in LiF. For constant driving force, cracks move more slowly in crystals with high dislocation densities than in relatively perfect crystals.This publication has 4 references indexed in Scilit:
- Experiments on Controlled FracturesProceedings of the Physical Society. Section B, 1957
- Propagation of Cleavage Cracks in CrystalsJournal of Applied Physics, 1956
- Observations of Dislocation Glide and Climb in Lithium Fluoride CrystalsJournal of Applied Physics, 1956
- The elastic constants of anisotropic materials—IIAdvances in Physics, 1956