Abstract
Dislocation structure formation is one of important mechanisms in the work hardening process of metals. The formation of dislocation dipoles an cross slip plays and important role in the dislocation structure formation. In this study, three dimensional dislocation dynamics simulation of dislocation motions in a body centered cubic crystal was performed with a rule for cross slip. The rule was considered as a thermal activation process by using Boltzman factor in the simulations, and the cross slip event is determined by probabilistic approach. In the simulations, one small Frank-Read source can glide on their own slip plane under given loading condition, and the amount of dislocation density in the computation box can effectively increase due to the cross slip mechanism.
