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The Theory of Dynamic Annihilation of Dislocations
Author(s) -
Kusov A. A.,
Vladimirov V. I.
Publication year - 1986
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.2221380114
Subject(s) - annihilation , dislocation , burgers vector , slip (aerodynamics) , condensed matter physics , materials science , mechanism (biology) , peierls stress , thermal , frank read source , dislocation creep , physics , mechanics , thermodynamics , quantum mechanics
A mechanism is proposed of the rapid annihilation of mixed dislocations by means of the cross‐slip of the double kink on the screw segment of the dislocation. The maximum annihilation distance R between dislocations as a function of applied stress σ, dislocation friction stress σ 0 , and angle α between the dislocation line and the Burgers vector b is correctly calculated. The comparison is made of theoretical results with available experimental data and previous rough theoretical estimations. It is shown that the annihilation mechanism is weakly connected with thermal fluctuations and it mainly has a pure force nature.