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Possible Role of Deformation‐Induced Point Defects in Dislocation Patterning
Author(s) -
Estrin Y.,
Abromeit C.,
Aifantis E. C.
Publication year - 1990
Publication title -
physica status solidi (b)
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.51
H-Index - 109
eISSN - 1521-3951
pISSN - 0370-1972
DOI - 10.1002/pssb.2221570110
Subject(s) - annihilation , dislocation , crystallographic defect , deformation (meteorology) , condensed matter physics , materials science , diffusion , physics , thermodynamics , composite material , quantum mechanics
The evolution of dislocation density is considered by taking into account the effect of deformationinduced point defects on the dislocation annihilation (recovery) rate. It is shown by linear stability analysis of the coupled equations describing the evolution of the dislocation density and the diffusion of point defects that a periodic spatial pattern can form during plastic deformation. The preferred wavelength of the emerging periodic structure is evaluated as a function of the production and annihilation bias parameters reflecting certain asymmetries in the generation and annihilation of interstitials and vacancies in the course of straining.