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The role of alloying and the associated mutual interaction of solute atoms with dislocations on the stress and temperature dependences of the steady‐state creep rate is investigated for Al−2 wt% Mg. The high temperature steady state creep rate is measured for the annealed and pre‐coldworked alloy under stresses up to 17 kg mm−2. The stress sensitivity paremeter, m′, is calculated and amounted to about three for both cold‐worked and annealed samples. It is found, for temperatures less than 300 °C, that m′ is independent of the applied stress. The dependence of the apparent activation energy on stress shows that at relatively low stresses creep is controlled by selfdiffusion of Mg and at applied stresses higher than 15 kg mm2 most probably by cross slipping. Pre‐cold‐working the sample seemed to be ineffective on the mechanism controlling creep rate.

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