Steady-state deformation at intermediate and high temperatures

Experimental data of steady-state deformation obtained either in creep or in constant strain-rate experiments, which extend from high to intermediate temperatures, become increasingly available in the literature. While in many cases the high-temperature regime can be explained by the well-known power-law models, the incorporation of the results at intermediate temperatures is still under discussion. It is the aim of the present work to show by a careful analysis of the above mentioned data, that the jog-dragging model put forward by Barrett and Nix can account for the whole temperature range considered here and that the activation enthalpy of steady-state deformation is that of lattice self-diffusion.