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Meeting 3rd World Congress on High Entropy Alloys (HEA 2023)
Symposium HEA 2023
Presentation Title Effect of Surface Deformation on the High-temperature Oxidation Response of Equimolar CrMnFeCoNi
Author(s) Thomas Valenza, Kate Moo, Emmanuelle Marquis
On-Site Speaker (Planned) Thomas Valenza
Abstract Scope Because of its role in the high-temperature oxidation of many alloys, surface deformation has the potential to influence the oxidation response of HEAs. To demonstrate its importance for HEAs, we compared the oxidation response of an equimolar CrMnFeCoNi alloy subjected to different surface finishes. Specimens were either polished to a mirror finish, to minimize surface deformation, or ground with coarse SiC paper, to maximize surface deformation. Prepared specimens were oxidized in air at 800 C, and the resulting oxide scales and sub-surface microstructures were characterized. The oxidation response differed dramatically as a function of the surface finish. Differences were noted in the oxide scale thicknesses, oxidation products, and internal oxidation. Furthermore, diffusion-induced grain-boundary migration appears to play a key role in the oxidation process of deformed surfaces. The present results point to possible variations in the oxidation response of commercial components due to varying processing conditions and surface finish.
Proceedings Inclusion? Planned: Metallurgical and Materials Transactions

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Ink Extrusion Printing of CoCrFeNi and (Zr0.50Ti0.35Nb0.15)80Al20 Microlattices
A CALPHAD Based Approach for Designing Precipitation-hardened High-entropy Alloys
A Computational Thermodynamics Framework with Intrinsic Short-range Order
A First-principles Study on the Structural-thermodynamics Properties of Tungsten-based High Entropy Alloys
A High Throughput CALPHAD Method of Designing Low Density, Compositionally-complex Alloys Toward Understanding Lightweighting Elements' Effects on Passivity
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
Accelerating the Discovery of Lightweight High Entropy Alloys for Extreme Conditions
Accelerating the Discovery of Low-Energy Structure Configurations: A Computational Approach that Integrates First-principles Calculations, Monte Carlo Sampling, and Machine Learning
Achieving Exceptional Mechanical Properties in High Entropy Alloys via Thermodynamically Guided Local Chemical Ordering
Additive Manufacturing as a Processing Pathway for Refractory BCC+B2 Alloys
AI-accelerated Materials Informatics Method for the Discovery of Ductile Alloys
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
Automated Characterization and Bayesian Prediction of High Strength Multi-principal Element Alloys
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
Characterization and Comparison of Radiation Damage in HfMoNbTaTi and HfMoNbTaZr Refractory High Entropy Alloys by Multi-energy Helium Ion Irradiation
Characterization of Microstructure and Deformation Behavior of Several AlNbTaTiVZr Refractory Complex Concentrated Alloys (RCCAs)
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
Custom-made Test Equipment for Measuring the Temperature Dependence of Hardness for High Entropy Refractory 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
Defects in High Entropy Alloys: A Real Cocktail Effect
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 for High Temperature Applications.
Development of a Process Optimization Framework for Fabricating Fully Dense NiCoCr Medium Entropy Alloy using Laser Directed Energy Deposition
Development of Coherent Ru-based BCC + B2 Alloys with High Thermal Stability
Development of High-entropy Tribaloy Alloys for Wear Resistance Applications
Development of High Entropy Alloy based Coatings via Directed Energy Deposition (DED) Additive Manufacturing for Nuclear Applications
Development of Innovative Structural Materials from High Entropy Alloys Obtained by a Hybrid Powder/Wire Additive Manufacturing Process
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 PeierlsNabarro Modeling
Effect of Al and Ti Addition on the Strain Hardening Behavior of Non-equiatomic CoCrFeNi High Entropy Alloy
Effect of Local Chemical Order on the Irradiation-induced Defect Evolution in Multi-principal Element Alloys
Effect of Surface Deformation on the High-temperature Oxidation Response of Equimolar CrMnFeCoNi
Effects of Heat Treatment on the Phase Evolution and Mechanical Properties of Arc Melted AlCuFeNiSi and AlCuFeNiTi High Entropy Alloys for Engineering Applications
Effects of Si and B Contents on the Microstructure and Mechanical Properties of Boron Enhanced Complex Concentrated Silicides
Effects of Specific Minor Elements on the Nanostructural Evolution of Quaternary Alcrfeni-based High Entropy Alloys and Their Consequent Influence on Mechanical Properties
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
Extensive Characterization of Precipitation Hardened CoCrFeNiTi0.2 High Entropy Alloy
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
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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
High-throughput Design, Synthesis, and Characterization of Refractory High Entropy Alloys (RHEAs)
High Temperature Oxidation Mechanisms of NbTiZr using 18O Tracer Technique
High Throughput Exploration of High Entropy MXenes using Neural Network Potentials
High Throughput Multi-objective Optimization of FCC Complex Concentrated Alloys for Extreme Conditions
Impact of Thermal Processing on Microstructures and Mechanical Properties of Quaternary High Entropy Alloys
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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
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
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Phase Decomposition in CrFeNiMn Under Thermal Aging
Phase Stability and Tensile Properties of Refractory High-entropy Alloys
Phase Stability in Refractory High Entropy Alloys
Predicting Properties of High Entropy Carbides from their Respective Binaries
Predicting the Strength of Multi-principal Element Alloys: A Mechanistic Data-driven Approach
Predicting Yield Strength of High Entropy Alloys from Density Functional Theory
Prediction of Atomic Distribution in Solid Solutions via CALPHAD-based Models
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Quasi-static Mechanical Response and Microstructure Analysis of Tantalum-tungsten Alloys
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Rapid Solidification Behavior of Refractory Multi-principal Element Alloys
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Short-range Ordering and Its Effects on Mechanical Properties of High-entropy Alloys
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Solid Solution Strengthening on CrCoNi-(Pd,V) Alloys
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The Compositional Dependence of Deformation Mechanisms, Strength, and Ductility in a Pseudo-binary Cr-Co-Ni Alloy System
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The Mechanical Properties and Tribological Performance of High Entropy (AlCoCrNiSi)100-xNx Thin Films
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Thermo-mechanical Processing of Refractory Multi Principal Element Alloys
Thermodynamics of Refractory Compositionally Complex Alloys
Thermomechanical Processing Maps and Microstructure Characterization of Cr-containing Refractory Complex Concentrated Alloys
Through the Looking Glass: Recent Progress in the Characterization of High Entropy and Compositionally Complex Alloys
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Towards More Robust EXAFS Analysis for Quantifying Short Range Order in Multicomponent Alloys
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Tuning Scale Formation in Al-containing Refractory High Entropy Alloys via Reactive Elements Addition
ULTIMATE: Advanced Manufacturing of Refractory Complex Concentrated Alloy-based Composites
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Unleashing the Power of Machine Learning for High-Entropy Alloy Discovery: Phase Prediction
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Wick Transducers with High Entropy Alloys: Unveiling Novel Thermoelectric and Superparamagnetic Behaviors
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