The present model furnished an analytical expression for the temperature dependence of the flow stress, and accounted for the observed low strain-rate sensitivity. It agreed with the generally accepted idea that macro-kink mechanisms controlled dislocation motion. An analytical expression was derived, for the (positive) temperature-dependent flow stress which was associated with a zero strain-rate sensitivity, by assuming that the 2 predominant mechanisms which controlled the mobile dislocation density were exhaustion and multiplication. These conclusions also seemed to apply to L10, D03 and D019; which exhibited a positive temperature-dependent flow stress that was systematically associated with a strain-rate sensitivity dip.

Stress Anomaly in L12 Alloys - the Extended-Locking/Unzipping Model. F.Louchet: Materials Science and Engineering A, 1997, 234-236, 275-8