  The interaction between dislocations and precipitates plays an important role
in the mechanical behavior of alloys. To provide more insight into the physics
of this interaction, this research analyzes short-range interactions of an edge
dislocation with an array of equally-spaced identical precipitates. We use a
modified dislocation dynamics approach accounting for penetrable and
impenetrable precipitates. This research quantifies the effects of precipitate
resistance on the geometry of the dislocation-precipitation interaction and the
local distribution of plastic strain near a precipitate. The results show that
a precipitate with a higher resistance causes an increase in the maximum value
of dislocation curvature during the bypass. In addition, a higher level of
precipitate resistance leads to a lower level of plastic deformation. Moreover,
we observed a high plastic strain gradient at the interface of non-shearable
precipitates.
