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Meeting 3rd World Congress on High Entropy Alloys (HEA 2023)
Symposium HEA 2023
Presentation Title Thermo-mechanical Processing of Refractory Multi Principal Element Alloys
Author(s) Nathan E. Peterson, Benjamin Ellyson, Adira Balzac, Nelson Delfino De Campos Neto, Kester Clarke, Amy Clarke
On-Site Speaker (Planned) Nathan E. Peterson
Abstract Scope Refractory multi-principal element alloys (RMPEAs) have been identified as having potential for new alloy and microstructural designs for ultra-high temperature applications (≥1473 K, or 1200 °C), due to their high melting points compared to traditional Ni-base superalloys. Since large-scale production of RMPEAs will inevitably require the use of thermo-mechanical processing to control final microstructural conditions, it is important to ellucidate processing-structure-property relationships to identify potential manufacturing-relevant processing windows. Here we study two unique systems: an off-equiatomic NbTiZr-based RMPEA, Nb26Ti23Zr8V20Mo23 and a ternary system, MoNbV. An evaluation of the strength and workability was performed up to 1300 °C using a Gleeble 3500 thermo-mechanical simulator at various strain rates (10-3 to 10 s-1). In the off-equiatomic NbTiZrVMo alloy, discontinuous and continuous dynamic recrystallization was observed at 1000 °C and 1200 °C, respectively, under quasi-static strain rates. In MoNbV, only discontinuous dynamic recrystallization was observed at 1300 °C under quasi-static strain rates.
Proceedings Inclusion? Planned: Metallurgical and Materials Transactions

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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A High Throughput to High Fidelity Study of Aqueous Passivation in [FeCoNi]CrxAly Alloys Across Classical Cr Threshold Concentration
A Proposed Structure of the Rhombohedral μ Phase of FeNiMoW Using Atomistic Calculations
Ab-initio Tensile Tests Applied to BCC Refractory Alloys
Accelerating EXAFS Analysis of SRO in HEAs: Challenges and Opportunities
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Accelerating the Discovery of Low-Energy Structure Configurations: A Computational Approach that Integrates First-principles Calculations, Monte Carlo Sampling, and Machine Learning
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Assessing Additive Manufacturing Processability of Novel Refractory High Entropy Alloys Prior to Powder Manufacture
Atomic Representations of Local and Global Chemical Effects of Mechanical Strength
B2 Phase in Refractory High Entropy Alloys: Macroscopic B2 Ordering Signal May Not Really Represent B2 Stability
BIRDSHOT: An Accelerated Program for the Discovery and Optimization of Refractory High Entropy Alloys
Bond-stiffness Based ML Approach to Predict Atomic Level Properties in MPEAs
Capturing Short-range Order in High-entropy Alloys with Machine-learning Potentials
Charge-density Based Convolutional Neural Networks for Stacking Fault Energy Prediction in Concentrated Alloys
Cold Spray Additive Manufacturing of Refractory High Entropy Alloys using Elemental Powder Blends
Combinatorial Exploration of Passivating Elements on Refractory High Entropy Alloys
Combined Experimental and Numerical Investigation of Ductile Fracture in the Cantor Alloy
Complex Alloys for Extreme Aerospace Environments
Complex Concentrated Alloys with Architectured Microstructures: A New Design Strategy for High-temperature Applications
Computational Discovery of B2 Phases in the Refractory High Entropy Alloys
Computational Thermodynamics-guided Alloy Design and Phase Stability In Non-equimolar Cocrfemnni Multi-principal Element Alloys: An Experimental-theoretical Study
Contender High-entropy Alloy Coatings to Superalloy 720 for Hot-forging Dies
Controlling the Sources of Interstitial Constituents in Refractory Complex Concentrated Alloys
Cracking the Code: Demystifying Early-stage Oxidation in High Entropy Alloys
Deciphering the Strength-vs-ductility Trade-off for High-entropy Alloys with AI-driven Fully ab Initio-based Material Modeling
Defect Mediated Microstructural Evolution and Phase Transformations in a BCC Based Al0.5NbTa0.8Ti1.5V0.2Zr Refractory High Entropy Alloy
Deformation Behavior and Damage Evolution in AlCoCrFeNi2.1 Eutectic High Entropy Alloys
Design Metastability in High-entropy Alloys by Tailoring Unstable Fault Energies
Design of High Entropy Superalloy FeNiCrAlCu with Stacking Fault Energy Modeling using Thermodynamic Calculations, First-principles, and Machine Learning
Design of High Entropy Superalloy FeNiCrCoAl Using Molecular Dynamics, Computational Thermodynamics and Machine Learning
Design of High Hardness Carbide Reinforced High-entropy Alloys
Designing Chemical Inhomogeneities in Concentrated Complex Alloys to Circumvent The Strength-ductility Trade-off
Designing Complex Concentrated Alloys for Additive Manufacturing: Expanding the Scope of Alloy 3D Printing for Resource-constrained and Location-specific Applications
Designing High-entropy Alloys: Aluminum Refractory B2 Phases
Developing CALPHAD Databases for High Entropy Alloys
Development and Characterisation of a New TiVNbMo-based Refractory High Entropy Alloy.
Development of Coherent Ru-based BCC + B2 Alloys with High Thermal Stability
Development of High Entropy Alloy Based Coatings via Directed Energy Deposition (DED) Additive Manufacturing for Nuclear Applications
Development of Refractory Metal-based CCAs with Improved Mechanical Properties
Diffuse Electron Scattering Reveals Kinetic Frustration as Origin of Order in CoCrNi Medium Entropy Alloy
Direct Determination of Short-range Order in Materials Using Spatial Statistics
Direct Ink Writing Printing and Microstructural Engineering of Lightweight Al10Co25Cr8Fe15Ni36Ti6 Micro-lattices
Discovery and Development of Novel, Ultrahigh-temperature Alloys and Coatings for Jet Engine and Industrial Gas Turbine Applications
Dislocations in Complex Alloys: Insights from Peierls-Nabarro Modeling
Effect of Al and Ti Addition on the Strain Hardening Behavior of Non-equiatomic CoCrFeNi High Entropy Alloy
Effect of Surface Deformation on the High-temperature Oxidation Response of Equimolar CrMnFeCoNi
Effects of Si and B Contents on the Microstructure and Mechanical Properties of Boron Enhanced Complex Concentrated Silicides
Electrochemical Technique to Characterize the High Temperature Oxidation Behavior of Materials
Enhanced Reduction of Stable Oxides: A Synergistic Effect for Processing of a High Entropy Alloy
Exploring Thermomechanical Post-processing Techniques to Improve the Mechanical Strength of an SLMed CoCrFeMnNi
Formation and Physical Properties of New Superconducting High-entropy Alloys Prepared by Mechanical Alloying
Fusing Analytical Models and Hardness Experiments for Accelerated Optimization of Yield Strength in RHEAs
Grain Boundary Segregation in High Entropy Alloys: Theoretical Development and Mesoscale Simulations
Hard Zones and Superior Mechanical Properties Produced by Dense Nanoscale Recrystallization Twins in a Single-phase Heterostructured High-entropy Alloy
High-entropy Alloys – A Twenty-year Perspective
High-entropy Materials Design by Integrating the First-principles Calculations and Machine Learning: A Case Study in the Al-Co-Cr-Fe-Ni System
High-temperature Oxidation Behavior of Refractory Complex Concentrated Alloys in Ta-Nb-Cr-Ti-Al system
High-throughput Computation and Process Design for Metal Additive Manufacturing: Exploring the Fe-Co-Cr-Mn-Ni System as a Case Study
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High Entropy Perovskite as Chromium Resistant Air Electrode for Intermediate-temperature Solid Oxide Electrolysis Cells
High Temperature Oxidation Mechanisms of NbTiZr Using 18O Tracer Technique
High Throughput Multi-objective Optimization of FCC Complex Concentrated Alloys for Extreme Conditions
Influence of Mo on Low Temperature Tensile Properties of As-cast CrFeCoNi-Mo High Entropy Alloys
Influence of Si on Latent Heat Release in Solidification and Microstructures of CrFeCoNi-Si Alloys
Influence of the Fabrication Process on the Corrosion Behavior of Two High Entropy Alloys in Molten Solar Salt
Investigating Alloying Element Effects on Screw Dislocation Trajectories in Multicomponent bcc Alloys
Investigating the Stability of a Al0.5NbTa0.8Ti1.5V0.2Zr BCC/B2 RCCA
Irradiation Effects in a Precipitation-hardened AlCuCrFeNi High Entropy Alloy
Laser Shock Peening Surface Modification Effects on Microstructure and Oxidation Behavior of NbTiCoCrNi Refractory Complex Concentrated Alloys
Lateral Variation in Multi-phase HEA Passive Films: Implications for Corrosion Resistant Alloy Design
Leveraging Metastability in High Entropy Alloy Design for Grain Refinement in Additive Manufacturing
Lightweight Refractory High Entropy Alloy With Extreme Ductility
Local Order Average-atom Approach for Simulating Refractory High Entropy Alloys
Machine Learning Guided High Entropy Alloy Development
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Mechanical and Tribological Properties of (AlCoCrNiSi)100-xNx Thin Films
Mechanical and Tribological Properties of (CoCrFeNiMn)1-x-Tix high-Entropy Thin Film Synthesized by Magnetron Sputtering
Mechanical, Corrosion Properties and Industrial Application of CoCrFeNiTi-based Multiprincipal Element Alloys Achieved by a Combination of Additive Manufacturing and Heat Treatment
Metastability, Coarsening, and Strengthening Induced by Oxygen Interstitials in BCC Ti-Nb Alloys
Microstructural Engineering in HEAs Undergoing Spinodal Assisted Phase Transformations
Microstructure and Deformation Behavior of a MoReW Medium Entropy Alloy
Microstructures and Properties of AlCrFeMnV, AlCrFeTiV, and AlCrMnTiV High-entropy Alloys
ML-based High-throughput Search to Identify Refractory High Entropy Alloy with Trade-off Mechanical Properties
Multi-principal Element Nanostructures via Nanosecond Laser-induced Dewetting
Multi-scale Characterization of 3D Printable CrCoNi-based ODS-MPEAs by Advanced Stereo-STEM Cross-correlated with EDS
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Phase-field Simulation of Phase Separation in MPEAs
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Phase Stability and Tensile Properties of Refractory High-entropy Alloys
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Predicting the Strength of Multi-principal Element Alloys: A Mechanistic Data-driven Approach
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Short Range Order and the Evolution of Deformation Mechanisms in the CrCoNi Medium Entropy Alloy
Stability and Growth Kinetics of Deformation Twin Embryos in BCC Complex Concentrated Alloys
Strength and Thermal Stability of Mechanically Driven Nanocrystalline High Entropy Alloys
Strength Reductions of Metal Alloys with Short-range Order as Revealed by Atomistic Simulations
Sulfidation Behavior of NbTiCr Multicomponent Alloy
Superconductivity in a New High-entropy Alloy Nb34Ti33Mo11Hf11V11
Synthesis & Characterization of Bulk Materials Towards the Development of Spinodally-hardened, Superhard High Entropy Ceramics
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Testing the Origin of the High Strength of Complex Concentrated Alloys using Large-scale Molecular Dynamics Simulations
The Compositional Dependence of Deformation Mechanisms, Strength, and Ductility in a Pseudo-binary Cr-Co-Ni Alloy System
The Fundamentals of Recrystallization in Binary Niobium Alloys
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Thermo-mechanical Processing of Refractory Multi Principal Element Alloys
Thermodynamics of Refractory Compositionally Complex Alloys
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Yield Strength-plasticity Trade-off and Uncertainty Quantification in ML-based Design of Refractory High-entropy Alloys
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