Quantitative phase field model for dislocation sink strength calculations

An original phase-field model dedicated to the calculation of dislocation sink strength is presented. Through a three-step validation procedure, it is shown to predict with an excellent accuracy the value of the sink strength with or without elasticity in numerous test cases for which an analytical solution is known. Further analysis shows that existing analytical values of dislocation sink strength are significantly underestimated, an effect that results from simplifying assumptions made to take into account irradiation in the diffusion equation.