  Dislocation-assisted phase separation processes in binary systems subjected
to irradiation effect are studied analytically and numerically. Irradiation is
described by athermal atomic mixing in the form of ballistic flux with
spatially correlated stochastic contribution. While studying the dynamics of
domain size growth we have shown that the dislocation mechanism of phase
decomposition delays the ordering processes. It is found that spatial
correlations of the ballistic flux noise cause segregation of dislocation cores
in the vicinity of interfaces effectively decreasing the interface width. A
competition between regular and stochastic components of the ballistic flux is
discussed.
