Screw vs. edge dislocation strengthening in body-centered-cubic high entropy alloys and implications for guided alloy design

Body-centered-cubic (BCC) high entropy alloys (HEAs) can show exceptionally strength up to temperatures. Mechanistic theories are needed guide alloy discovery within the immense multicomponent HEA compositional space. Here, two new for strengthening as controlled by screw and edge dislocations, respectively, applied predict yield stresses of a range BCC over wide Results that theory, with one fitting parameter, capture experiments in many dilute non-dilute while parameter-free theory agrees having sufficiently large misfit parameter. These results indicate transition single-phase from traditional dominance increasing is enabled complex alloys. point use design high-temperature range.