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Meeting MS&T22: Materials Science & Technology
Symposium High Entropy Materials: Concentrated Solid Solutions, Intermetallics, Ceramics, Functional Materials and Beyond III
Presentation Title High-temperature Oxidation and Mechanical Behavior of Ta-Ti-Cr Concentrated Refractory Alloys
Author(s) Noah J. Welch, Maria J Quintana, Todd M Butler, Peter C Collins
On-Site Speaker (Planned) Noah J. Welch
Abstract Scope There is an ever-growing need for high temperature materials that can outperform Ni-base superalloys in extreme environments (>1000C-1150C). While dilute refractory alloys generally exhibit suitable mechanical strength at much higher temperatures, their oxidation resistance is severely lacking. However, concentrated refractory alloys have a tendency to form favorable complex oxides that improve oxidation resistance. The oxidation behavior of four Ta-Ti-Cr alloys (TaTiCr, Ta4Ti3Cr, Ta2TiCr, and Ta4TiCr3) have been investigated to elucidate the role of constituent concentration on microstructures and resulting oxidation performance and mechanical behavior. These four alloys have been tested for 24 hours at 1200C and show drastically different oxidation behaviors, with the TaTiCr alloy exhibiting superior oxidation resistance. These alloys were also mechanically tested (compression) in the 20-1200C range to understand the high-temperature performance in atmospheres containing oxygen.

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

3D Ink-extrusion Printing of CoCr(Cu)FeNi High-entropy
A Bayesian Approach to Efficiently Discover Refractory High Entropy Alloys
Accelerated Discovery of Refractory High Entropy Materials by Machine Learning and High Throughput Experiments
An Automated, Machine Learning-driven Framework for Predicting High Temperature Oxidation Properties in Refractory Complex, Concentrated Alloys
An Experimentally Driven High-throughput Approach to Design Refractory High-entropy Alloys
Atomic Mobility Assessment of the fcc Ternary Co–Cr–Mn Alloy
Deformation Behaviors and Mechanisms in Single BCC Phase Refractory High-entropy Alloys
Design of Multicomponent Rare-earth Sesquioxides for Thermal/Environmental Barrier Coatings
Design & Microstructural Evolution of Fe-rich, Co-Free Multi-principal Element Alloys
Development of Ni-based Medium Entropy Alloys Using THERMOCALC Software
Do We Need a Refractory Alloy with Super-high Strength at Room Temperature?
E-10: Characterization of Microstructure and Properties of Al2FeCoNiCu High-entropy Alloy
E-11: Development of Oxide Melt Solution Calorimetry for High Entropy Ceramics
E-12: Exploration of High-ductility Ternary Refractory High-entropy Alloys Using First-principle Calculations and Machine Learning
E-13: High-throughput Design, Synthesis and Characterization of W-based Refractory High-entropy Alloys
E-14: High Throughput Multi-principal Element Alloy Exploration Using a Novel Composition Gradient Sintering Technique
E-15: Study on Texture Evolution In Cold Rolled High Entropy Alloy during Annealing
E-16: The Effect of Local Composition on the Initiation Mechanism of Adiabatic Shear Banding in WFeNiMo
Effect of Short-range Ordering on Diffusion Properties in Complex Concentrated Alloys
Experimental Determination of Mid-temperature Phases in Refractory Multi-Principal Element Ternary Alloys for Thermodynamic and Solid Solution Strengthening Modeling
Exploring Properties and Relationships in High Entropy Alloys
First Principles Prediction of Mechanical Properties of High Entropy Alloys
Grain Refinement and Nano-scale Precipitates in Non-equiatomic CoCrFeNiMo Medium-entropy Alloy
Hardness of Thin Film High Entropy Transition Metal Ceramics
High-Entropy Carbide Ceramics: Transformative Materials for Extreme Environments
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 and Mechanical Behavior of Ta-Ti-Cr Concentrated Refractory Alloys
High-throughput Approach for Stacking Fault Energies in HEAs
High-throughput Design of High-performance Lightweight High-entropy Alloys
High Entropy Alloys and NSF
Laser Welding of CoCrFeMnNi High Entropy Alloy to Inconel 718
Manufacturing of HEAs at Different Scales
Mechanical and Oxidation Behavior of Hf-25Ta-5X Refractory Complex Concentrated Alloys
Mechanical Properties And Deformation Mechanisms In TiMoNbZr Medium Entropy Alloys: A Molecular Dynamics Study
Microstructural Characterization and Oxidation Resistance in Multi FCC Principal Element Alloys
Modeling of Oxidation Resistance in Ni-containing High Entropy Alloys: A Combined First-principles and Machine Learning Study
Phase Evolution and Oxidation Study of Combinatorially Designed Hf-Al-Si Refractory Complex Concentrated Alloy for High Temperature Applications
Phonon Broadening and Thermal Conductivity in High Entropy Ceramic Carbide
Probing Short-Range Order and Its Effect on the Mechanical Properties of a CrCoNi Multi-principal Element Alloy Using Nanoindentation
Production, Characterization, Mechanical Properties and Corrosion Resistance of CrCoNi-based Multi-principal Element Alloys
Revealing Phase Transformation and Deformation Behavior in a B2-base High-Entropy Alloy by In-situ Neutron Diffraction
Revisit the VEC Criterion with High-throughput Ab Initio Calculations: A Case Study With Al-Co-Cr-Fe-Ni System
Theory-guided Design of Refractory Alloys for Ultra-high-temperature Applications
Thermodynamics and Phase Transformations in Refractory Complex Concentrated Superalloys
Towards to an ICME Approach for the Discovery of the Lightweight High Entropy Alloys

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