The effect of prior tensile strain on resistivity of torsionally deformed aluminium at room temperature

This work deals with the effect of tensile pre-strain on the electrical resistivity changes of high purity aluminium samples during torsional deformation at room temperature. It was found that as the amount of tensile pre-strain was increased, the percent rise in resistivity decreases. This behaviour was explained in terms of the formation of jogged dislocations, and decreased density of lattice vacancies.