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Meeting 2025 TMS Annual Meeting & Exhibition
Symposium Refractory Metals 2025
Presentation Title Microstructural Evolution of Nb-Alloys Produced via High-Pressure Torsion
Author(s) Miranda D. Bell, Lethicia Calderon, Kaitlyn Mullin, Tresa Pollock, Suveen Mathaudhu
On-Site Speaker (Planned) Miranda D. Bell
Abstract Scope Nb alloys are of interest for high-temperature aerospace applications, such as nose-cones or rocket nozzles. Commercial examples of such alloys include C103 and Nb-47Ti, however few reports exist on their microstructures and properties as a function of cold working and/or grain refinement. In this study, we seek to address this gap through parametric processing of Nb-alloys through high-pressure torsion, where control of applied strain can produce wrought microstructures and highly refined grains. The microstructural evolution and microhardness as a function of applied strain will be reported and compared with the extant literature on conventionally processed alloys. The findings will contribute to enabling the potential bulk processing of these and other refractory alloys for extreme environments.
Proceedings Inclusion? Planned:
Keywords High-Temperature Materials, High-Entropy Alloys, Other

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

Application of High Temperature Profilometry-based Indentation Plastometry (HT-PIP) to Refractory Metals
Assessment of State of the Art in Refractory Niobium Alloys
Characterizing recrystallization in Type 2 and Type 5 Nb
Creep resistant refractory multiple-principal-element alloy
Designing Refractory Alloy Bond Coats that Develop Thermally-Grown Complex Oxides: An Investigation of the Cr-Ta System
Effect of Geometric Features on Liquid Metal Dealloying of Additively Manufactured Niobium-Titanium
Effect of Microstructure on Machining Pure Tungsten
Evaluating Microstructure and Strength Properties of Tungsten based Refractory Multi-Principal Element Alloy fabricated by Laser Based Directed Energy Deposition
Exploring the Mo-Re Alloy System by Nanoindentation
Fabrication of Mo-Si-B alloy through spark plasma sintering using Mo powder containing La2O3 nanoparticles uniformly dispersed via ultrasonic spray pyrolysis
Fatigue crack propagation in semi-brittle materials: A case study on tungsten
Flow Stress and Microstructural Evolution of TZM and Mo-La Alloys at Temperatures from 1400 to 1700 °C
Get Low: Achieving Ultra-Fine Grain Sizes in Niobium with High-Pressure Torsion
Heat Treatment Optimization of Laser Powder Bed Fusion Additive Manufacture C103
High-temperature deformation in Nb-based alloy C103 (Nb-10Hf-1Ti)
High-Temperature Oxidation Behavior of Novel Refractory Complex Concentrated Alloys
High-throughput design, synthesis, and characterization of refractory multi-principal element alloys (MPEAs)
Investigating the Microstructure and High-temperature Mechanical Properties of Additively Manufactured W-Re Alloys
Low temperature oxidation behavior of pure niobium and C103 niobium alloy
Mechanical Behavior of Neutron Irradiated Ta-W Alloy
Microstructural Evolution of Nb-Alloys Produced via High-Pressure Torsion
Microstructure and mechanical properties of a Mo-Si-B-Ti alloy manufactured by laser powder bed fusion
New microscopic insights on the high temperature deformation mechanisms in refractory metals and alloys
Observations on surface deformation of tungsten materials in laser focus in air
Oxidation of refractory metals in molecular and dissociated oxygen
Preparation of Spherical Tungsten Alloy Powder with Particle Atomic Layer Deposition
Refractory alloy-based bimetallic structure fabricated by wire arc additive manufacturing
Refractory Alloy Microstructure Development with Processing Variations
Refractory Metals, A Nanocrystalline Approach
Systematic exploration of refractory high entropy alloys using high-throughput techniques and machine learning
Temperature Dependent Deformation in Single Crystalline MoNbTi
The development of new thermodynamic databases for niobium and molybdenum alloys
The High Temperature Performance of Mechanically Processed Equiatomic NbTaV Refractory Alloy
The oxidation behavior and mechanical properties of model Nb-Si-based alloys at elevated temperatures
Understanding the microstructural evolution and mechanical property in as-cast and annealed Refractory High Entropy Alloys

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