Numerical evaluation of dislocation loop sink strengths: A phase-field approach

A phase-field method is applied to compute the sink strength of dislocation loops in irradiated materials. This model enables to consider various sink geometries and long range elastic interactions between dislocation loops and migrating defects. Our results show that the analytical solutions underestimate the sink strength of loops. In addition, the influence of elasticity on sink strength increases with the loop radius. Finally, there is a significant effect of the dislocation line configuration enhanced by elasticity.