@misc{silva_computational_thermodynamicsguided_2024, author={Silva, D.D.S.,Bertoli, G.,Neto, N.D.C.,Schell, N.,Clarke, K.D.,Kaufman, M.J.,Clarke, A.J.,Coury, F.G.,Bolfarini, C.}, title={Computational thermodynamics-guided alloy design and phase stability in CoCrFeMnNi-based medium- and high-entropy alloys: An experimental-theoretical study}, year={2024}, howpublished = {journal article}, doi = {https://doi.org/10.1016/j.scriptamat.2024.116264}, abstract = {A computational thermodynamics approach has been employed to design CoCrFeMnNi-based medium- and high-entropy alloys (M/HEAs) with systematically varied compositions (Co((80-X)/2)Cr((80-X)/2)FeXMn10Ni10 with x = 30, 40, and 50 at.%) and phase stability. Since the formation of sigma phase, usually brittle and undesirable, is a common concern, when this class of alloys is subjected to elevated temperatures (600–1000 °C), predicting its formation becomes essential. Thus, its formation and the phase equilibria were studied using the CALPHAD method, and two empirical methods, namely, valence electron concentration (VEC) and paired sigma-forming element (PSFE). Isothermal aging treatments at 900–1100 °C for 20 h were performed, since CALPHAD and VEC/PSFE predictions diverged. Both prediction methods were compared with experimental characterization by a combination of scanning electron microscopy and high-energy synchrotron X-ray diffraction. The predictions from the VEC/PSFE and CALPHAD calculations (depending on the database used) were shown to be quite accurate.}, note = {Online available at: \url{https://doi.org/10.1016/j.scriptamat.2024.116264} (DOI). Silva, D.; Bertoli, G.; Neto, N.; Schell, N.; Clarke, K.; Kaufman, M.; Clarke, A.; Coury, F.; Bolfarini, C.: Computational thermodynamics-guided alloy design and phase stability in CoCrFeMnNi-based medium- and high-entropy alloys: An experimental-theoretical study. Scripta Materialia. 2024. vol. 252, 116264. DOI: 10.1016/j.scriptamat.2024.116264}}