  A simple fitting approach is used for modeling the compressive yield strength
of body centered cubic (bcc) solid solution high entropy alloys in
Al-Hf-Nb-Mo-Ta-Ti-V-Zr system. It is proposed that the yield strength could be
modeled by a polynomial where the experimental data can be used for finding the
polynomial coefficients. The results show that the proposed polynomial could
model the yield strength of solid solution alloys relatively well. The
developed polynomial is used for predicting the strength of RHEAs in
Hf-Mo-Nb-Ta-Ti-V-Zr system. It is observed that the yield strength of alloys
within this system increases with the additions of Mo and Zr and decreases with
the addition of Ti. Furthermore, the model predicts that the yield strength
increases with increasing the value of parameters valence electron
concentration (VEC) and atomic size difference (ASD). Although the developed
polynomial does not consider the mechanisms involved in the strengthening of
alloys, it can be considered as a straightforward method for assessing the
strength of solid solution RHEAs.
