A theory to describe the temperature and strain-rate-dependance of the yield strength of solid solution FCC alloys has been recently extended to deal with arbitrary alloy composition and number of components .
Here, we address the validity of a simplified elasticity-based version of this model for High Entropy Alloys (HEAs). We first consider large-scale, finite-temperature MD simulations on a model 4-component alloy. The theory predicts the characteristic lengths of the low-energy dislocation structure and the flow stress versus temperature in good agreement with simulations. We then successfully apply the model to predict the strength of already-characterized HEAs in the Ni-Co-Fe-Cr-Mn and Noble metals classes, and the strengthening provided by dilute additions to HEAs [1,3]. With this simple version validated, we make predictions for new materials and discuss HEA design.
 C.Varvenne, A.Luque, W.A.Curtin, Acta Mater. (2016).
 C.Varvenne, S.I.Rao, W.G.Nöhring, W.A.Curtin, in prep.
 C.Varvenne, W.A.Curtin, Scripta Mater. (2017);