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Meeting 2023 TMS Annual Meeting & Exhibition
Symposium Alloy Behavior and Design Across Length-Scales: An SMD Symposium Honoring Easo George
Presentation Title Predicting High Entropy Alloy Phase Stability across Length Scales
Author(s) James R. Morris, German Samolyuk, Yury Osetsky, G. Malcolm Stocks
On-Site Speaker (Planned) James R. Morris
Abstract Scope One of the challenges for theory is to predict behaviors without prior information, providing both contact with experiments and the ability to predict behaviors not yet observed. In this talk, I will highlight theoretical work motivated directly by experimental efforts from Easo George. In particular, I will focus on phase stability of high entropy alloys and related materials. The prediction of specific behaviors of alloys requires a consideration of more than entropy. Understanding the role of enthalpy led to the ability to make reasonable predictions of which compositions are likely to form single-phase alloys. These concepts have been refined, and have proven to be reasonable through a great expansion of experimental results since originally formulated. We will also discuss how the disorder of 3- and 4-component alloys of 4f and 5f metals can stabilize a particular crystal structure, through non-entropic contributions. <BR> This work was supported by DOE’s BES-MSE program.
Proceedings Inclusion? Planned:
Keywords High-Entropy Alloys, Computational Materials Science & Engineering, Phase Transformations


Ambient-temperature Plasticity of Brittle Intermetallics at Micron-meter Size Scales
Challenges in the Design of Refractory Multi-principal Element Alloys
Deformation Mechanisms in Compositionally Complex Polycrystalline CoNiCr-based Superalloys
Deformation Twinning in HCP Ti: The Role of Interfacial Complexions and Interstitial Solutes
Easo George – Advancing Understanding of Mechanical Behavior through Test Material Preparation
Easo George - Recollections of His Youth
Factors Affecting Mechanical Twinning in Single-phase FCC and Polycrystalline MEAs and HEAs
Fracture Properties of High-entropy Alloys
From Superplasticity in Steels to the Great Pyramid of Giza
Functional High Entropy Alloys
Future Prospects of MoSiBTiC Alloys as Ultra-High Temperature Materials
Heat-Resistant Cr-Alloys, Microstructure, Oxidation and Creep
Low Temperature Deformation Mechanisms of CrMnFeCoNi High-entropy Alloy Polycrystals
Physical Metallurgy and Mechanical Properties of Iridium and Platinum Alloys Used in Power and Heat Sources Onboard Interplanetary Spacecraft
Predicting High Entropy Alloy Phase Stability across Length Scales
Solid Solution Hardening Effects on Thermal Stability and Mechanical Properties of Nanostructured Ni-enriched CrMnFeCoNi High Entropy Alloys
Some Unusual Aspects of the Deformation Behavior of FeAl
Strong Effects of Tiny Compositional Changes on Structural and Functional Material Properties
The Interplay between Phase Transformation and Mechanical Properties in High Entropy Alloys
Theory-guided Design of High-strength, Ductile, Single-phase BCC High Entropy Alloys
Utilizing Nanoprecipitates to Modulate Phase Transformation, Strength, and Ductility of HEAs

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