Fig. 6: Critical temperatures of 103 equimolar, as-cast HEAs.
From: Visualizing temperature-dependent phase stability in high entropy alloys
a ‘Critical solid-solution’ temperature of each HEA divided by the highest melting temperature of the pure elements in the HEA system. b ‘Critical adjacent phase’ temperature of each HEA divided by the highest melting temperature of the pure elements in the HEA system. Only FCC and BCC phases are considered, as the regular solution parameters in33 are for FCC and BCC phases. Cutoff values of 0.48 and 0.78 were chosen in (a, b), respectively, as these cutoff values result in the highest fraction of alloys being correctly classified as single or multiphase, 80.6 and 78.6%, respectively. A different choice of cutoff values would result in lower classification accuracies. Values for AlCrFeNi, CoCrFeMnNi, HfMoNbTiZr, HfNbTaTiZr, MoNbTaTiZr, AlHfNbTaTiZr, CoFeMnTiVZr, and CoCrFeMnNiV are labeled with arrows. The critical temperatures of all 103 HEAs shown can be found in Supplementary Data 2.
