Texture strengthening of copper electrical conductors
SummaryCommercial tough-pitch copper of high grade has been used to correlate the texture of wires to their tensile strength. Twentyfour samples were prepared by cold drawing of copper wires in one direction for four different reductions in area and subjecting them to different temperatures of preliminary and final annealings. The texture of these samples was calculated by the method of inverse pole figures. The final annealing temperature was found to be the factor affecting the texture of the wire irrespective of the pre-annealing temperature. It was found that Young's modulus depends mainly on the texture of the wire, while the other mechanical properties depend more on the grain size and the annealing state. The values of electrical resistivities of all wires are isotropic with respect to texture.