Impact of N on the Stacking Fault Energy and Phase Stability of FCC CrMnFeCoNi

An Ab Initio Study

Journal article (2021)

Authors

Yuji Ikeda University of Stuttgart, Max-Planck-Institut für Eisenforschung
Fritz Körmann Max-Planck-Institut für Eisenforschung, Team Marcel Sluiter - Mechanical, Maritime and Materials Engineering
Research Group
Team Marcel Sluiter (Mechanical, Maritime and Materials Engineering) (TU Delft)
Copyright: © 2021 Yuji Ikeda, F.H.W. Körmann
DOI: https://doi.org/10.1007/s11669-021-00877-x
More Info
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Published Date

2021

Language

English

Faculty

Mechanical, Maritime and Materials Engineering

Department

Materials Science and Engineering

Research Group

Team Marcel Sluiter

Abstract

Interstitial alloying has become an important pillar in tuning and improving the materials properties of high-entropy alloys, e.g., enabling interstitial solid-solution hardening and for tuning the stacking fault energies. In this work we performed ab initio calculations to evaluate the impact of interstitial alloying with nitrogen on the fcc–hcp phase stability for the prototypical CrMnFeCoNi alloy. The N solution energies are broadly distributed and reveal a clear correlation with the local environments. We show that N addition stabilizes the fcc phase of CrMnFeCoNi and increases the stacking fault energy.