  We study the kinetics of the redistribution of impurity atoms in the elastic
fields of dislocations by computer simulation methods. A work consists of
several stages. The first is the simulation of a dislocation core structure
with a Burgers vector along [100] direction by using the modified molecular
static method. The second is obtaining the coefficients that determine the
influence of the components of the strain tensor on the diagonal elements of
the matrix of diffusion coefficients and in the equations for fluxes of carbon
atoms in bcc iron. The third stage is associated with modeling the diffusion
characteristics of carbon atoms by the method of molecular dynamics in a
crystal without defects. The fourth and final stage uses the data about atomic
structure that we obtained at first stage, as well as the characteristics
calculated in the second and third, is a simulation of the formation of
segregations of interstitial atoms, which is based on solving diffusion
equations that take into account the elastic deformations created by the
dislocation. The complex of developed models is used to analyze the kinetics of
segregation formation. 3D graphs illustrate the distribution of interstitial
atoms in the vicinity of a dislocation for different times at certain
temperatures.
