A screw dislocation in an infinite medium was first analyzed by means of non-local elasticity theory. The non-local elastic interaction energy between a screw dislocation and a point defect, as caused by an interstitial C atom in the body-centered cubic metal, was then calculated. The results revealed that non-local, and classical, solutions gave very different conclusions. The elastic interaction energies that were predicted by non-local elasticity theory exhibited good agreement with that measured by using internal friction methods. However, the classical value was greater than the experimental value.

K.L.Pan, J.Fang: Radiation Effects and Defects in Solids, 1996, 139[2], 147-54