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Meeting 2026 TMS Annual Meeting & Exhibition
Symposium Advances in Multi-Principal Element Alloys V: Mechanical Behavior
Presentation Title Advanced Characterization of Engineering Applications of a Strong and Ductile Medium Entropy Alloy with Known Short-Range Order
Author(s) Hugh Shortt, Juntan Li, David Fieser, Alfredo Navarrete nunez, Xuesong Fan, Xin Wang, Khachatur Manukyan, Shuai Chen, Jochi Tseng, Melanie Kirkham, Cheng Li, Klauss-Dieter liss, Megumi Kawasaki, Stephen Giles, Debasis Sengupta, Michael Gao, Ke An, Yan Chen, Haixuan Xu, Eric Lass, Anming Hu, Peter Liaw, Lizhi Ouyang
On-Site Speaker (Planned) Hugh Shortt
Abstract Scope The alloy CoNiV has the strongest room-temperature yield strength (~1 GPa) among single phase FCC Medium Entropy Alloys (MEA) to date due to severe lattice distortion in V. Lattice distortion allows an optimized yield strength-ductility trade-off, thereby improving mechanical behavior in engineering applications. Moreover, CoNiV has Short-Range Ordering (SRO), which allows for the investigation of MEAs with SRO in engineering applications such as Low-Cycle Fatigue (LCF) and High-Pressure Torsion (HPT). Advanced modeling and characterization were used to investigate CoNiV in engineering applications such as LCF and HPT. In- and ex- situ neutron diffraction (ND), ex-situ High Energy X-ray Diffraction (HEXRD) and Atom Probe Tomography were used to map the load distribution across crystal directions, phase evolution, chemical instability and SRO response due to LCF. Finally, ex-situ HEXRD line scans were conducted to capture grain deformation, load distribution and phase evolution after HPT.
Proceedings Inclusion? Planned:
Keywords Characterization, Phase Transformations, High-Entropy Alloys

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Accurate Determination of the Deformation Mechanisms in Refractory Compositionally Complex Alloys
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Additive Manufacturing: From Complex Alloys to Simple Alloys
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Atomic-level defects on dislocation lines and their role in refractory complex alloy strength
Atomistic Tracking of Self Diffusivity in Multi-Principal Element Alloys
Bi-continuous W-rich Refractory High Entropy Alloy-Cu Composite: Toward material innovation of nuclear reactor coolant system
CALPHAD-Guided Development and Mechanical Evaluation of Dual-Phase CoFeNiVTi Alloys
Combinatorial microstructure & stoichiometry-based and hybrid machine learning & domain knowledge for hardness mapping in a high-entropy alloy
Comparison of NbxMo1-x and (VNbTa)xMo1-x Refractory MPEA Thin Films by In Situ Microcantilever Beam Bending
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Compositionally Tuned Cryogenic Plasticity in TiZrHf-Based HCP High-Entropy Alloys
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Creep Properties of NbTaTi-Based Refractory High-Entropy Alloys
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Design and Development of Lightweight Medium and High-Entropy FeMnAlC Steels
Dislocation Analysis of CrCoNi using Micropillar Experiments and Molecular Dynamics Simulations
Dislocation Properties in Refractory Compositionally Complex Alloys
Dry Sliding Wear of Cu-Alloyed Low-Carbon Steels: Role of Oxides and Quenching Temperature
Ductile-Brittle Transitions in bcc Refractory High-Entropy Alloys
Dynamic properties of NbTaTiHf High-Entropy Alloy
EBSD analysis of microstructure evolution in hot-deformed WMoFeNi MPEA Alloy system
Effect of minor Ge/Mo/W on the corrosive behavior in FCC CoCrFeNi high-entropy alloy
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Examining the influence of multiphase evolution and elemental partitioning on mechanical behavior in Nb-V-Zr alloys
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