Possibility of the Existence of Attractive Forces Between Dislocations of Like Sign

Abstract

It is concluded that two moving dislocations of the same sign and on the same slip plane can sometimes attract rather than repel one another (and two of unlike sign repel rather than attract each other). This reversal over the usual behavior will occur at velocities where the kinetic energy in the displacement field of an isolated moving dislocation is larger than the strain energy in the same field.