The Anisotropy of Electrical Resistivity of Cold-Drawn Wires of Some Cubic Metals and Alloys

Abstract

A special A.C. technique has been devised to measure and compare the transverse resistivities of wires. In drawn wires of several metals and alloys the resistivities measured in the longitudinal and transverse directions have been shown to differ. In copper the longitudinal resistivity was slightly less than the transverse, but in α brass and α aluminium bronze it was the greater by about 3 per cent. This effect is similar to that previously found in rolled strip, and it is suggested that an explanation may be found in terms of lattice disturbances associated with dislocations.