Instability origin of dislocation substructure
- 1 February 1990
- journal article
- research article
- Published by Taylor & Francis in Philosophical Magazine A
- Vol. 61 (2) , 281-290
- https://doi.org/10.1080/01418619008234941
Abstract
The formation of a dislocation substructure in high-temperature deformation is treated as a stability problem. A crystal in which dislocations can glide and climb is modelled as an anisotropic viscous medium. The subgrain structure development is interpreted as a deformation-induced instability of internal bending (folding) type first described by Biot. The suggested continuum mechanics model seems to provide a rational explanation of the main observed features of the subgrain structure: misorientation, tendency to regularity and relatively uniform subgrain size.Keywords
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