Peculiar serrated flow during compression of an FeAlCrMo medium-entropy alloy

This letter presents a systematic study of serrated flow of the FeAlCrMo medium-entropy alloy in compression, first observed at 400 °C and a strain rate of ~10−4 s−1. In this work, these parameters were varied in order to evaluate how they affect the deformation behavior. Compression curves together with the acoustic emission data suggest that dynamic strain aging (the Portevin-Le Châtelier effect) is responsible for the jerky flow. Furthermore,...