Abstract
The self and interaction energies of kinks on screw dislocations in the b.c.c. lattice have been studied by computer simulation, using models representing both potassium and an iron-like material. Both the total energy and the spatial distribution of the energy are considered. The interaction energy is found to be as predicted by linear elasticity for separations of as low as half the width of a single kink; for still smaller separations the energy decreases linearly. The potassium results are compared with experiment and found to be reasonably consistent with a model in which the formation of double kinks is the rate-controlling mechanism in low temperature plastic deformation.
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