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Meeting 2020 TMS Annual Meeting & Exhibition
Symposium High Entropy Alloys VIII
Presentation Title Metastability Engineering of HIgh Entropy Alloys
Author(s) Hyoung Seop Kim
On-Site Speaker (Planned) Hyoung Seop Kim
Abstract Scope In this presentation, we utilized metastibility engineering and multiple-stage strain hardening in a ferrous Fe60Co15Ni15Cr10 (at%) MEA and achived a good combination of cryogenic tensile strength and ductility. Astonishingly, detailed microstructural observations at each stage reveal the sequential operation of deformation-induced phase transformation from parent fcc to newly formed bcc (body-centered cubic) phases. The in-situ neutron diffraction studies make it clear that the martensite formation and the concurrent load partitioning between the fcc and the bcc phases play an important role in the increase in strength. Replacing high-cost alloying elements cobalt and nickel with iron, as well as introduction of metastability-engineering at liquid nitrogen temperature, distinguishes the new ferrous MEAs from previously reported equiatomic HEAs. This result underlines insights to provide expanded opportunities for the future development of HEAs for cryogenic applications.
Proceedings Inclusion? Planned: Supplemental Proceedings volume; Planned: Supplemental Proceedings volume

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A Cuboidal B2-enhanced Dual-phase CrMnFeCoNiAl0.75 High-entropy Alloy with Excellent High-temperature Strength
A Machine Learning Model for Alloy Design
A Rapid Simulation Method of Single Phase High-entropy Alloys via CALPHAD-based High-throughput Calculation
Ab Initio Modeling of Large Defects in γ, γ', and γ" Superalloys
Ab Initio Modeling of Peierls Potential of Screw Dislocations in bcc High-entropy Alloys
Ab Initio Phase Stabilities of High Entropy and Chemically Complex Alloys
Alloy Design Strategy for Enhancing High Temperature Strength and Room Temperature Ductility in BCC HEAs
An Investigation into the Link Between Microstructure and Pitting Corrosion of Novel Alloy FBB8+Ti
Analysis of Irradiation Resistance of Tungsten-based Reduced Activation Alloy for Fusion Plasma Applications
Analysis of Strengthening due to Grain Boundaries and Annealing Twin Boundaries in the CrCoNi Medium-entropy Alloy
Anisotropic Lattice Distortion Induced by Hydrogen in CoCrFeMnNi High-entropy Alloy
Antiphase Boundaries in the B2 Matrix of the Al-Co-Cr-Fe-Ni High Entropy Alloy
Atom Probe Tomography Study of a Fe25Ni25Co25Ti15Al10 High-entropy Alloy
Atomic and Electronic Basis for the Serration Behavior of High Entropy Alloys and Metallic Glasses
Atomic Diffusion in Melts of Refractory HEAs
Atomic Scale Modeling of Hydrogen Accommodation and Transport in BCC Refractory High Entropy Alloys
Atomistic Modeling of Dislocations in a Random High-entropy Alloy
Atomistic Modeling of the Structures of High Entropy Alloy Nanoparticles from Carbothermal Shock Synthesis
Atomistic Simulations of Dislocations and Deformation in FCC Ni-based Binary Concentrated Alloys
Atomistic Simulations of the fcc-to-hcp Phase Transformation in the Equiatomic CoCrFeMnNi Alloy under High Compression
CALPHAD Aided Design of MoNbTiZr-based High Entropy Alloys
Characteristics of Edge Dislocations and their Glide in FCC NiCoFe and NiCoFeCu Equiatomic Solid Solution Alloys
Combinatorial Exploration of High Entropy Alloys
Comparison of High-throughput Experimental Results with Thermodynamic Calculations for more than 2000 HEAs
Comparison of Short and Long Term Static Oxidation in Nb-Cr-W-Ta-V High Entropy Alloy
Composition Design of Coherent Precipitate-strengthening AlCuFeNiTi Multi-principal Element Alloys by High-throughput CALPHAD-type Calculation
Compositional Design and Deformation Behavior in Ni-based Concentrated/HEA Alloys
Compositional Effects of Stacking Fault Energies in Ni-based FCC Concentrated Alloys
Concurrent TWIP-TRIP, Short-range Order and Strain Localization in Single-crystal NiCrCo Medium Entropy Alloy Drives Exceptional Mechanical Behavior
Correlation Effects in Diffusion in High Entropy Alloys Correlation Effects in Diffusion in High Entropy Alloys
Corrosion Behavior of Selected High Entropy Alloys
Corrosion Performance of a Non-equimolar High Entropy Alloy After Annealing
Corrosion Properties of Refractory TiNbTaZrMo High Entropy Alloy
Corrosion, Wear, and Surface Degradation Behavior of High Entropy Alloys
Data-driven Design of High-entropy Alloys
Decoding Early Candidacy of High Entropy Alloys for Nuclear Application using the Advanced Test Reactor through Predictive Methods
Deformation-induced Crystalline to Amorphous Phase Transformation in High-entropy Alloys
Deformation Behavior of the Al0.3CoCrFeNi High-entropy Alloy during Low-cycle Fatigue by In-situ Neutron Diffraction
Deformation Mechanisms of Two Stable Face Centered Cubic High Entropy Alloys at Cryogenic Temperature
Density Functional Theory Calculations of Generalized Stacking Fault Energies in Equal-molar MoNbTi Multi-principal Element Alloys
Design of HEAs Strengthened by L12 Precipitates using High Throughput Thermodynamic Calculations
Design of High-strength and Ductile High-entropy Steels
Design of Non-equiatomic Refractory High Entropy Alloys through Combination of Various Strengthening Mechanisms Towards Strength-ductility Synergy
Designing Ductile Refractory High-entropy Alloys Guided by Natural Mixing
Designing New Corrosion Resistant High Entropy Alloys with Exceptional Strength-ductility Synergy and Good Weldability
Determination of Young’s Modulus and Phase Prediction using Classical Molecular Dynamics in Refractory HEAs
Developing Non-equiatomic Refractory BCC HEAs with Improved Mechanical Properties using Combinatorial Screening
Development and Application of Phase-based Data Repository via CALPHAD Method in the HEA Discovery
Development of Metastable Nanolaminate High Entropy Alloy Overcoming Strength-ductility trade-off
Development of CuFeMnNi-based High Entropy Alloys Using CALPHAD Approach and Thermomechanical Processing
Development of TiVNbTaW High Entropy Alloy with TRIPLEX Nanostructure
Direct Production of High Entropy Alloy Powders
Dislocation Dynamics in a BCC Refractory Multi-Principal Element Alloy MoNbTi
Dislocation Nucleation in FeCoCrNiMn High Entropy Alloy
Ductility of Quaternary Refractory Medium Entropy Alloys with Body-centered Cubic Structure
Dynamic Behavior of CrMnFeCoNi High-entropy Alloy
Effect of Al on Microstructure, Hardness, and Corrosion Performance of Al-Cr-Fe-Mn Alloys
Effect of Heat Treatment on the Microstructure and Mechanical Properties of AlCrFeNiCu High Entropy Alloy
Effect of Mn in CrCoFeNiMn High Entropy Alloy on Creep Performance
Effect of Solute-solute Interactions on Yield Strength in HEAs
Effect of Sputtering Parameters on Structure and Mechanical Properties of TiZrHfNiCuCo High Entropy Alloy Films
Effects of Initial Grain Size on Friction Stir Weldability and Cryogenic Tensile Properties for Rolled and Cast CoCrFeMnNi High-entropy Alloys
Electronic Descriptors for Designs of Chemically Complex Transition-metal Alloys
Electronic Properties and Characterization of Passive Films Formed on CrMnFeCoNi and CrFeCoNi Multiple Principal Element Alloys in a 0.1M NaOH Solution
Electroplating Nanocrystalline Medium and High-entropy Alloys
Emerging Computational Tools for Exploring the Refractory Compositionally Complex Alloys
Engineering Atomic-level Complexity in Complex Concentrated Alloys
Enhanced Irradiation Resistance Through Phase Transformation in NiFeCoCrCu HEA Film
Enhanced Mechanical Properties by Nitrogen Addition in N-CoCrNi and N-CoCrFeMnNi Compositionally Complex Alloy
Enhanced MIC Resistance of AlCoCrFeNiCux High-entropy Alloys by Copper Regulation
Evaluation of Microstructural and Mechanical Properties of AlxCrFeMnNi High Entropy Alloys
Evolution of Texture During Thermo-mechanical Processing of High Entropy Alloy (HEA)
Exceptional Strength-ductility Combination in an FCC Based High Entropy Alloy
Fabriacte and Mechanical Properties of Non-equiatomic High Entropally Reinforced 6082 al Matrix Nanocomposite
Fabrication and Hardness Behavior of High Entropy Alloys
First-principles Methods of Calculating Stacking Fault Energies in Refractory BCC High-entropy Alloys
First-principles Prediction of the Phase Stability and Mechanical Property of NbMoTaW High-entropy Alloy
Formability Enhancement of High-entropy Alloy by Manipulation of Stacking Fault Energy
Formation and Mechanical Properties of TaNbVTiW High Entropy Alloys Prepared by Powder Metallurgy
Formation Zone Prediction of the Al-Co-Fe-Ni-Ti t High Entropy Alloys by High-throughput Calculation (HTC) Technique
Friction Stir Processing: A Microstructural Modification Technique for Complex Concentrated Alloys
Generalized Planar Fault Energies and Twinning in NbMoTaW BCC High Entropy Alloy: A First-principles Study
Grain Size Dependent Entropy-driven Phase Transformation in High Entropy Oxides
High-cycle Fatigue Mechanism in a Body-centered Cubic HfNbTaZrTi High Entropy Alloy
High-Entropy Ceramics: Selected Recent Studies and Future Opportunities
High-throughput Experiments for Structural Materials – a Current Status
High Entropy Alloy Effect on Stability of Potential Permanent Magnets
High Entropy Alloy Nanomaterials as Filler Materials for Brazing Ni-based Superalloys
High Entropy Alloys for Magnetocaloric Effect Applications
High Entropy Alloys for Tribological Application Elaborated by Laser Direct Metal Deposition
High Strain Rate Deformation of Dual Phase High Entropy Alloy
High Temperature Creep Behavior of AlZrCrMoNbTi High Entropy Alloy Using the Spark Plasma Sintering (SPS) System
High Temperature Phase Stability and Mechanical Behavior of Face-centered Cubic High Entropy Alloys
Homogenous Structure Formation in FeCoNiCrMo High Entropy Alloy
How High are the Entropies of High Entropy Alloys?
Hydrogen Diffusion and Hydrogen-induced Stress Cracking (HISC) of Cold Rolled High Entropy Alloy (HEA, Co0.2Cr0.2Fe0.2Mn0.2Ni0.2)
ICME for Ultra-high Temperature Refractory High Entropy Materials
Imaging Short Range Order in The CrCoNi Medium Entropy Alloy
Impact of Heat Treatment on Light Weight Multicomponent AlFeCuCrMg x (x =0, 0.5, 1, 1.7) Alloys
Impact of Interstitial Alloying on Stacking-fault Energies in High-entropy Alloys from First Principles
In-situ Neutron Diffraction Study of the Mechanical Properties of Al0.7CoCrFeNi High Entropy Alloy
In-situ Neutron Diffraction Study on Stress-induced Phase Transformation in TiZrHfNbx Refractory High-entropy Alloys
In Situ Atom Probe Tomography of Oxidation Mechanism in High Entropy Alloys
In Situ TEM Characterizations on the Dual Phase High Entropy Alloy
Influence of Aluminum Additions to the Hall-Petch Relation in Single Phase FCC CoCrFeNi based High Entropy Alloys
Influence of Compositional Complexity on Helium Accumulation and Bubble Formation in Concentrated Solid Solution Alloys
Integrating Theory and Experiment in the Design of Multiprincipal Element Alloys
Interdiffusion, Solubility Limit and Role of Enthalpy and Entropy in Senary FCC Al-Co-Cr-Fe-Ni-Mn High Entropy Alloy
Internal Oxidation of Refractory MoWTaTiZr HEA using Periodic DFT and Atomistic Thermodynamic Modeling
Interpreting APT Data Containing He-bubbles in Irradiated Single-phase Concentrated Solid-solution Alloys (SP-CSAs)
Investigating BCC Refractory Multi-principal Element Alloys by Heaviside Digital Image Correlation
Low Cycle Fatigue Behavior and Cyclic Plastic Response of Equiatomic CrCoNi Medium-entropy Alloy with Partially and Fully Recrystallized Microstructures
Machine-learning Driven Efficient Exploration of the High Entropy Alloy Phase Space
Machine Learning Alloy Design Compositions and Hardness for High Entropy Alloys
Machine Learning for Accelerating the Design of Additively-manufactured Turbine Blades Yielding Ultra-high Energy Efficiency
Materials Fingerprint Classification
Mechanical and Biocompatibility Evaluation of MoxNbTaxTiZr High and Medium Entropy Alloys for Biomedical Implants
Mechanical Properties and Deformation Behavior of NiTi-Based Low-, Medium- and High-Entropy Intermetallic Compounds at Different Temperatures
Mechanical Properties and Discrete Slip Events in Conventional Alloys and High-entropy Alloys at Different Temperatures
Mechanical Properties and Thermal Stability of Single-Target Deposited Ta-Ti-Zr-Based Quinary High-Entropy Alloy and Nitride Coatings
Mechanical Properties and Tribocorrosion Behaviors of TiNbTaZr-based High-entropy Alloys for Biomedical Applications
Mechanical Properties of CoCrFeMnNiMox High Entropy Alloy Films
Metastability Engineering of HIgh Entropy Alloys
Micro- and Mesoscale Mechanical Properties of a FeCrMnNi High Entropy Alloy Subject to Large Strain Extrusion Machining
Microalloying Technology: an Attractive Strategy for the Design of High-entropy Alloys
Microstructural Characterizations and Mechanical Properties of CrFeNiMn and NbTaTiV High Entropy Alloys
Microstructural Evolution and Mechanical Properties of Non-equiatomic Fe40Cr25Ni15 Al15Co5 High-entropy Alloy
Microstructure and Diffusion Properties of Ordered Multicomponent B2 Aluminides
Microstructure and Magnetic Behavior of FeCoNi(Mn–Si)x (x=0.5,0.75,1.0) High-entropy Alloys
Microstructure and Mechanical Properties of an Equiatomic CoCrFeMnNi High Entropy Alloys Fabricated by Gas Atomization
Microstructure and Mechanical Properties of Non-equiatomic Fe-Mn-Ni-Cr-Co-Al-Ti Septenary High Entropy Alloy
Microstructure and Mechanical Property of FCC HEA with L12 -strengthened Between Cryogenic and Elevated Temperatures
Microstructure and Tribological Behavior of Non-equiatomic Ti-Zr-Cr-Al-Si-V and Ti-Zr-Cr-Al-Si-V-Nb Refractory High Entropy Alloys
Microstructure Characterization of Oxide Dispersion Strengthened CoCrFeMnNi High Entropy Alloy Synthesized by Cryo-milling and Spark Plasma Sintering
Microstructure Evolution and Enhanced Strength in CoCrFeMnNi Alloy through High Speed Shear Loading
Microstructure Evolution and Mechanical Behavior of Nitrogen Interstitial CoCrFeMnNi High-entropy Alloys
Monte Carlo Study on Atomic Arrangement Around Crystal Defect in Multi-principal Element Alloys
Multi-component Intermetallic Precipitation in FCC based Complex Concentrated Alloys
Multicomponent and High-entropy Cantor Alloys
Nanomolding Far and Close to Equilibrium
Nanoscale Deformation Twinning in CrCoNi Medium-entropy Alloy Investigated by Molecular Dynamics Simulation
New Approaches for Exploration of Refractory Multi-principal Element Alloys
Non-equiatomic, Multi-phase TRIP/TWIP Multi-principal Element Alloys
On the Damage Tolerance of TRIP, TWIP and Dual-phase High-entropy Alloys
On the Exceptional Mechanical Properties and Effect of Local Order in CrCoN-based High-entropy Alloys
Origin of High Cr Cation Fractions in Passive Oxide of Ni38Fe20CrxMn21-0.5xCo21-0.5x High Entropy Alloys
Origins of Excellent Passivation in Multiple Principle Element Alloys
Oxidation Behavior of Al4Co3Cr25Cu10Fe25Ni33 at High Temperature
Partitioning Behavior based Design of BCC / B2 Dual-phase Refractory Multi-principal Element Alloys
Passivation Phenomena in Highly Corrosion Resistant High Entropy Alloys: An Evaluation of the Role of Chromium Content
Phase Field Dislocation Dynamics Modeling of Refractory High Entropy Alloys
Phase Inversion in Refractory High Entropy Alloys
Phase Stability and Defect Properties of fcc FeCrMnNi HEAs
Phase Stability and Deformation Behaviors of CrFeCoNiMox (x=0 – 0.3) High-entropy Alloys
Phase Stability and Microstructural Evolution in Refractory High Entropy Superalloy
Phase Stability in Refractory High Entropy Alloys
Phase Stability of a Group of fcc-structured Medium-entropy Alloys Under High Pressure and High Temperature
Phase Stability of B2-ordered High Entropy Alloy
Phenomenological Approach to Multi-principal-element Structural Materials
Physical Origin of Mechanical Behavior of NbTaTiV(Zr) High Entropy Alloy from First-principles Simulations
Pitting Corrosion Behavior of Ni38Fe20Crx(MnCo)42-x High Entropy Alloys
Preparation of CoCrFeNi High-entropy Alloy via Electro-deoxidation of Metal Oxides
Quantifying Short-range Ordering in Refractory High-entropy Alloys
Quantifying the Effect of Randomness on Vacancy Diffusivity in High Entropy Alloys
Roles of Martensitic Phase Fractions in Mechanical Behavior of TRIP-HEA
Second-phase of 29Fe15Al18Cr27Ni High Entropy Alloy
Significance of Grain Refinement in HfNbTiZr and CoCrFeNi High-entropy Alloys
Simulation Studies of Grain Boundary Diffusion in a Model HEA Alloy
Simulations and Modeling of the High Temperature Yield Behavior of Chemically Complex Concentrated BCC Alloys
Size Effects and the Hall-Petch Relationship in the Mn17Fe22Co24Ni24Cu13 System
Small-scale Mechanical Behavior of Single Phase and Complex High Entropy Alloys
Solute and Self-diffusion in HCP High Entropy Alloys
Speromagnetism and Asperomagnetism as the Ground States of the Tb-Dy-Ho-Er-Tm “Ideal” High-entropy Alloy
Stability of Al-Li-Ti-Sc-Mg High Entropy Alloys from Monte Carlo Simulations
Static and Dynamic Mechanical Performance of Non-equiatomic CoCrFeMnNi HEA
Strengthening of Transformation-induced Plasticity-assisted High Entropy Alloy via Interstitial Nitrogen
Stress Corrosion Cracking Mechanism of FCC Type High-entropy Alloys Structural Materials under High Temperature Pressurized Water Environment by Molecular Dynamics Simulation
Structural Evolution and Thermal Stability of Nanocrystalline High Entropy Alloy through Cryomilling
Studies on Microstructure, Hardness and Corrosion Behavior of the Cu-Fe-Ti-Zr-Nix High Entropy Alloys
Synthesis and Phase Stability of High-entropy Nitrides and Carbonitrides
Synthesis of High Entropy Metal Carbides by a Solvothermal Process
Tailoring Multi-principal Element (MPE) Alloy Compositions based on Competing Deformation Mechanisms
Temperature Dependence of Structural and Magnetic Properties of Single-crystal CoCrFeNiMn-based Alloys
The Controlled Large-area Synthesis of Two Dimensional Metals
The Development of High Performance Hybrid High Entropy Alloys(HEAs)
The Prediction of Enthalpy and Elastic Properties of Fe-Cr-Co-Ni High Entropy Alloys by Using First Principles Methods
The Stacking Fault Energies of FCC High-entropy Alloys: An ab initio Study
Theoretical and Experimental Investigation of Phase Structure and Mechanical Property Dependence on Composition in Nb-Ti-V-Zr Multi-principal Element Alloys
Theory for Yield Strength of BCC HEAs
Theory of Formation of High Entropy Alloys for Biomedical Applications
Thermal Expansion of Refractory MoWTaTiZr High Entropy Alloy
Thermal Transport Calculation of High Entropy Alloys for Thermoelectric Applications
Tuning Microstructure of Refractory High-entropy Alloys via Controlling Cooling Rates
Ultrahigh Strength and Thermal Stability of Nanocrystalline High-entropy Alloys Made by Electrodeposition
Ultrastrong VCoNi Medium-entropy Alloy Enabled by Severe Lattice Distortion
Unique Elastic and Plastic Deformation Behavior of a Ductile Refractory High-entropy Alloy at Room and Elevated Temperatures
Unraveling Atomic-scale Lattice-distortion Strengthening of Precipitate-hardening High-entropy Alloys
Unravelling Sluggish Diffusion of High-entropy Alloys through Machine Learning Methods
Welding Metallurgy and Weld Properties of High Entropy Alloys
Wire +Arc Additive Manufacturing of AlCoCrFeNi High Entropy Alloy
Latest Developments in High Entropy Brasses & Bronzes

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