DISLOCATION SINK EFFICIENCIES FOR DI-INTERSTITIALS IN BCC (Fe, V) AND FCC (Cu) METALS
The dislocation sink efficiencies for di-interstitials has been calculated by the kinetic Monte Carlo method for bcc (Fe, V) and fcc (Cu) crystals in the temperature range 293-1000 K and for the dislocation density range 310<sup>13</sup>-310<sup>14</sup> m<sup>-2</sup>. The interactions between the di-interstitials (considered as elastic dipoles) and the dislocation elastic fields have been calculated by the anisotropic linear theory of elasticity. Perfect straight edge, screw and mixed dislocations in slip systems (111X110), (111X112), (100X100), (100X110) in Fe and V, and (110) {111), (110) {112), (110) {001) in Cu have been considered. Analytical approximations of the calculated dependences of dislocation sink efficiencies on the temperature and the dislocation density have been obtained. The effect of the di-interstitial production during damage irradiation on the void swelling rate and the radiation creep rate has been estimated for the considered metals.