Towards Stacking Fault Energy Engineering in FCC High Entropy Alloys

  title={Towards Stacking Fault Energy Engineering in FCC High Entropy Alloys},
  author={Tasneem Khan and Tanner Kirk and Guillermo Vazquez and Prashant Singh and Andrei V. Smirnov and Duane D. Johnson and Khaleed Ali Ahmed Ben Youssef and Raymundo Arr{\'o}yave},
  journal={Acta Materialia},
4 Citations

Structure and low-temperature micromechanical properties of as-cast and SPD-processed high-entropy Co25−xCr25Fe25Ni25Cx alloys

The effect of carbon additions on the structure and mechanical properties of high-entropy alloys Co25− xCr25Fe25Ni25C x ( x = 0, 1, 3, at. %) in two structural states, as-cast coarse-grained (CG)



Machine Learning Enabled Prediction of Stacking Fault Energies in Concentrated Alloys

Recent works have revealed a unique combination of high strength and high ductility in certain compositions of high-entropy alloys (HEAs), which is attributed to the low stacking fault energy (SFE).

A data-driven machine learning approach to predicting stacking faulting energy in austenitic steels

Stacking fault energy (SFE) is an intrinsic material property whose value is crucial in determining different secondary deformation mechanisms in austenitic (face-centered cubic, fcc) steels.

Mechanical Properties and Stacking Fault Energies of NiFeCrCoMn High-Entropy Alloy

Materials with low stacking fault energies have been long sought for their many desirable mechanical attributes. Although there have been many successful reports of low stacking fault alloys (for

Can Experiment Determine the Stacking Fault Energy of Metastable Alloys?

Stacking fault energy (SFE) plays an important role in deformation mechanisms and mechanical properties of face-centered cubic (fcc) metals and alloys. In metastable fcc alloys, the SFEs determined

Impact of Chemical Fluctuations on Stacking Fault Energies of CrCoNi and CrMnFeCoNi High Entropy Alloys from First Principles

This work investigates the impact of the compositional fluctuations in the vicinity of stacking faults for two prototype fcc MEAs and HEAs, namely CrCoNi and CrMnFeCoNi by employing first-principles calculations and reveals the dependence of the intrinsic SFEs on local chemical fluctuations reveals a highly non-linear behavior.

Tunable stacking fault energies by tailoring local chemical order in CrCoNi medium-entropy alloys

This theoretical study demonstrates that chemical short-range order is thermodynamically favored in HEAs and can be tuned to affect the mechanical behavior of these alloys.

Stacking Fault Energy Prediction for Austenitic Steels by Thermodynamic Modeling and Machine Learning

Stacking fault energy (SFE) is vital in controlling the deformation mechanism and mechanical properties of austenitic steels, while there are no accurate and straightforward computational tools for

Transformation-reinforced high-entropy alloys with superior mechanical properties via tailoring stacking fault energy

Novel Co-rich high entropy alloys with superior tensile properties

ABSTRACT We developed a series of Co-rich CoxCr25(FeNi)75−x (x = 35, 45, 55, 65) high entropy alloys with improved strength and/or ductility, derived from lowering the stacking fault energy (SFE) and