Dislocation climb mobilities, assuming vacancy bulk diffusion, are derivedand implemented in dislocation dynamics simulations to study the coarsening ofvacancy prismatic loops in fcc metals. When loops cannot glide, the comparisonof the simulations with a coarsening model based on the line tensionapproximation shows a good agreement. Dislocation dynamics simulations withboth glide and climb are then performed. Allowing for glide of the loops alongtheir prismatic cylinders leads to faster coarsening kinetics, as directcoalescence of the loops is now possible.
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