%0 Journal Article
%A Silva, David D. S.
%A Coury, Francisco G.
%A Vitos, Levente
%A Li, Wei
%A Huang, Shuo
%A Schell, Norbert
%A Mason, Paul
%A Clarke, Amy J.
%A Kaufman, Michael J.
%A Bolfarini, Claudemiro
%T Strengthening and deformation mechanisms in CoCrFeMnNi-based medium- and high-entropy alloys at room and cryogenic temperatures
%J Acta materialia
%V 306
%@ 1359-6454
%C Amsterdam [u.a.]
%I Elsevier Science
%M PUBDB-2026-00057
%P 121879
%D 2026
%Z Waiting for fulltext 
%X In this study, novel non-equiatomic CoCrFeMnNi-based medium- and high-entropy alloys (M/HEAs) weredesigned to activate distinct deformation mechanisms, including twinning-induced plasticity (TWIP) and/ortransformation-induced plasticity (TRIP). Tensile tests were performed at 298 and 173 K. A variety of ex-situmultiscale characterization techniques, strengthening modeling, thermodynamic modeling (CALPHAD method),and ab initio density functional theory (DFT) calculations were employed to investigate the structural andmicrostructural evolution, enabling accurate identification of the strengthening and active deformation mechanismsoperating in the M/HEAs. Strengthening modeling revealed that grain boundary strengthening was theprimary contributor to yield strength at both temperatures. A key finding of this study is that a controlledFCC→HCP martensitic transformation, associated with TRIP, enhances the strength-ductility balance even whenthe resulting HCP phase reaches  50
%F PUB:(DE-HGF)16
%9 Journal Article
%R 10.1016/j.actamat.2025.121879
%U https://bib-pubdb1.desy.de/record/643159