Calculation of electrical resistivity of dislocations and grain boundaries in polyvalent and transition metals

Abstract

A dislocation model that takes into account the presence of quasistationary states and the lattice dilatation in the region of a dislocation core is used to perform a calculation concerning the electrical resistivity of polyvalent and transition metals from dislocations and grain boundaries. A low-angle grain boundary is treated as a set of dislocations, while a high-angle grain boundary is considered as a set of cylindrical pores. When the dilatation was assumed to be dV = (bB)^2 (bB is the stable Burgers vector of a perfect dislocation), a satisfactory agreement with the experimental data was obtained.