High-temperature deformation mechanisms in metals and alloys

Abstract

The high temperature deformation mechanisms in metals and alloys are described to be the recovery-control in pure metals, the solute-atmosphere drag in solution-hardened alloys and the Srolovitz mechanism in dispersion-strengthened alloys with incoherent dispersoid. For predicting the deformation-history dependence of the flow stress based on these mechanisms, the history dependence of dislocation structure has to be predicted. While the basic knowledge for the prediction seems to be almost established, the prediction method is yet at its semi-empirical stage.