The ageing of Al-Zn theoretical analysis of the resistivity data

Abstract
Resistivities are calculated for age-hardened Al-Zn alloys, using a pheno-menological scheme based on the authors' transport calculations. With a G. P. zone size distributions established by X-ray studies, reasonable agreement with the measured resistivities is obtained. It is shown that resistiometric studies can be a useful supplement to X-ray techniques in monitoring the ageing process.