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Meeting MS&T21: Materials Science & Technology
Symposium High Entropy Materials: Concentrated Solid Solutions, Intermetallics, Ceramics, Functional Materials and Beyond II
Presentation Title Multi-component High Entropy Ultra-high Temperature Carbides: Solid-solution to High-entropy Phase Formation
Author(s) Ambreen Nisar, Tyler Dolmetsch, Tanaji Paul, Cheng Zhang, Benjamin Boesl, Arvind Agarwal
On-Site Speaker (Planned) Ambreen Nisar
Abstract Scope The development of a new class of high entropy-ultra high temperature ceramics (HE-UHTCs) has gained increased interest due to the possibility that they can possess enhanced thermo-mechanical properties unattainable by conventional UHTCs. Though a large number of HE-UHTCs have emerged, the understanding on the factors such as solid-solutioning, entropy, and multi-component, contributing to the remarkable enhancement in the properties is still in a nascent stage. In this regard, systematically the constituents in a UHTCs were raised from monoliths to binary to ternary and then quaternary in (Ta,Nb,Hf,Ti)C UHTC system. The four-component system is expected to form HE-UHTCs whilst others showed mere solid-solutioning. Dense samples were produced using spark plasma sintering (SPS) at 1850 °C. This work will delineate the contributions of solid-solutioning vs high entropy towards enhancing thermo-mechanical properties in a multi-component UHTC carbide system.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

A High-throughput Strategy to Study Phase Stability and Mechanical Properties in Complex Concentrated Alloys
A Low-temperature Chemical/Powder Metallurgical Route for Generating Fine-grained Refractory Complex Concentrated Alloys
A Novel Soft-magnetic Single-phase B2-ordered Multi-principal Element Alloy
A Systematic Analysis of Phase Stability in Refractory High Entropy Alloys Utilizing Linear and Non-linear Cluster Expansion Models
Ab Initio Modeling on the Elastic Properties of Al-Co-Cr-Fe-Ni High Entropy Alloys: A Case Study with FCC Phase
Amorphous Bands Induced by Low Temperature Tension in a Non-equiatomic CrMnFeCoNi Alloy
Atomic Transport by Point Defects and Clusters in Concentrated Alloys
Behavior of a High-entropy Alloy in Molten Salt Environments under Biaxial Stresses
Compositionally Complex Oxides: Synthesis, Characterization, Challenges, and Opportunities
Control of Local Distortions in High-entropy Oxides
Creep Performance of Various Single Phase FCC CoCrFeNi Family of High Entropy Alloys
Data-driven Design of Refractory High-entropy Alloys
Data-enabled Additive Manufacturing of High-entropy Alloys
Deformation Behavior in the Refractory High-entropy Alloys
Deformation Mechanisms in the Medium Entropy Alloy CoCrNi: Effects of Lattice Distortion and Chemical Short-range Order
Deformation of Refractory Multi-principal Element Alloy Nanowires
Design of TWIP/TRIP Non-equimolar High-entropy Alloys
Designing High-entropy Intermetallics: Machine Learning Models and Validation
Development of Interatomic Potentials for Highly Concentrated/Entropy-stabilized Systems
Development of Low-cost High Entropy Alloys through Alloy Mixing
Discontinuous Precipitation Leading to Nano-rod Intermetallic Precipitates in High Entropy Alloys Results in an Excellent Strength-ductility Combination
Enabling High-strength and Oxidation-resistant Refractory Complex, Concentrated Alloys via Multi-fidelity Experiments and Simulations
Enhanced Oxidation Resistance of (Mo95W5)85Ta10(TiZr)5 Refractory Metal Multi-principal Element Alloy Up to 1300°C
Exploring the Chemical and Structural Phase Space of High Entropy Alloys with Ab Initio Calculations and Machine Learning Potentials
FeNiMnAl(Cr) Multi-principal Component Alloys
High-entropy and Multi-principle Element Materials: Distinguishing Features and Emerging Opportunities
High-throughput Design and Processing of MPEAs Using Additive Manufacturing
Insights into the Deformation Processes of a Refractory Complex Concentrated Alloy Exhibiting B2-type Order
Interstitial Induced Transformations in Nb-Ti Alloys
Irradiation Damage in (Zr0.25Ta0.25Nb0.25Ti0.25)C High-entropy Carbide Ceramics
Joint Prediction of Mechanical Properties of Alloys with Enhanced Fidelity through Integration of Machine Learning (Data Analytics) and Multiscale Modeling
Local Ordering and Defect Evolution in Body-centered Cubic (BCC) Multi-principal Element Alloys
Machine Learning Enabled Defect Energies in Concentrated Alloys
Microstructure and Mechanical Properties of Hf-27Ta and Hf-21Ta-21X (X is Nb, Mo or W) Alloys
Microstructure and Phase Stability of High Entropy (RE)PO4 Monazite-structured Ceramics
Microstructures of Al2.7CrFeMnV, Al2.7CrFeTiV, and Al2.7CrMnTiV High-entropy Alloys
Multi-component High Entropy Ultra-high Temperature Carbides: Solid-solution to High-entropy Phase Formation
Nanostructured Oxide-dispersion-strengthened CoCrFeMnNi High-entropy Alloys
Now On-Demand Only - Computationally Guided High Entropy Alloy Discovery
Now On-Demand Only - Determination of Fluctuations in Local Composition, Strain and Lattice Distortions in Multi-principal Component Alloys Using Advanced Transmission Electron Microscopy
Now On-Demand Only - Exploring the Feasible High Entropy Alloy Space
Now On-Demand Only: Atomistic Simulations of the Structure and Mechanical Properties of Grain Boundaries in High Entropy Alloys
Oxidation Behavior of Concentrated Refractory Alloys
Phase-field Modelling of Transformation Pathways and Microstructural Evolution in MPEAs (Multi Principal Element Alloys)
Predicting Fundamental Properties of BCC Refractory Multicomponent Alloys Using Electronic Descriptors and Statistical Learning
Radiation Effects in High Entropy Alloys
Recreate New Life of the Periodic Table: High-entropy Alloys
Refractory High Entropy Alloys with Balanced Properties Tailored for Service Conditions
Stress-corrosion of Al0.1CoCrFeNi High Entropy Alloy in a Molten Eutectic Salt
Structural and Mechanical Properties of High Entropy Metal-nitride
Structure Design and Properties of Multiple-basis-element (MBE) Alloy Flexible Films
Surface Enhancement of Multi-principal Element Alloys by Gas Nitriding
Temperature-dependent Configurational Entropy Calculations for Refractory High-entropy Alloys
Temperature Dependent Mechanical Behavior of the Au-Zn-Al Ternary System
The Cyclic Plastic Response and the Fatigue Induced Microstructural Changes of Equiatomic CrCoNi Medium-entropy Alloy
The Cyclic Plastic Strain Localization and the Fatigue Crack Initiation in Equiatomic CrCoNi Medium-entropy Alloy
The Dynamic and Sensing Performance of 3D Printed Functionally Graded Elastomeric Lattice Structures
The Formation of Complex Ternary Oxides in Refractory Complex Concentrated Alloys
The Research Thermoplastic Deformation Modes of Dual-phase Special Alloys for Obtaining Rational Intermetallic Structure
The Role of Composition and Static Displacements on Phase Stability of BCC High Entropy Alloys
Theories for Predicting Simple Solid Solution High-entropy Alloys: Classification, Accuracy, and Important Factors Impacting Accuracy
Thermal Conductivity Reduction in (Zr0.25Ta0.25Nb0.25Ti0.25)C High Entropy Carbide from Extrinsic Lattice Defects
To Mix, or not to Mix: Progresses in Entropy Descriptors
Tuning Mechanical Metastability in FeMnCo Medium Entropy Alloys
Ultrahigh-strength and Ductile High-entropy Alloys with Coherent Nano-lamellar Architectures
Understanding the Nature of Passivation Film of a TRIP Fe39Mn20Co20Cr15Si5Al1 (at.%) High Entropy Alloy in 3.5 wt.% NaCl Solution
Using Large Scale Ab Initio Computing to Predict and Understand High Entropy Alloys Formation

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