Impact of interstitial elements on the stacking fault energy of an equiatomic CoCrNi medium entropy alloy: theory and experiments
Igor Moravčík, Martin Zelený, A. Dlouhý, Hynek Hadraba, Larissa Moravcikova-Gouvea, Pavel Papež, Ondřej Fikar, Ivo Dlouhý, Dierk Raabe, Zhiming Li
Abstract
after doping the alloy with 0.5 at. % interstitial N. The higher SFE reduces the nucleation rates of twins, leading to an increase in the critical stress required to trigger deformation twinning, an effect which can be used to design load-dependent strain hardening response.
Topics & Concepts
Materials scienceAlloyStacking-fault energyNucleationCALPHADCrystal twinningThermodynamicsStacking faultScanning transmission electron microscopyDensity functional theoryHigh entropy alloysTransmission electron microscopyCondensed matter physicsCrystallographyDislocationMetallurgyPhase diagramPhase (matter)Composite materialNanotechnologyMicrostructureChemistryComputational chemistryPhysicsOrganic chemistryHigh Entropy Alloys StudiesHigh-Temperature Coating BehaviorsIntermetallics and Advanced Alloy Properties