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Meeting TMS Specialty Congress 2026
Symposium 4th World Congress on High Entropy Alloys (HEA 2026)
Presentation Title Radiofrequency Plasma Spheroidization of Mechanically Alloyed Complex concentrated alloy Al0.5NbTa0.8Ti1.5V0.2Zr
Author(s) Frantisek Lukac, Jiří Kozlík, Kristína Bartha, Jakub Klečka, Monika Vilémová, Josef Stráský
On-Site Speaker (Planned) Frantisek Lukac
Abstract Scope Recent advances in additive manufacturing have increased the demand for high‑quality metal powders with tailored compositions. Refractory complex concentrated alloys, challenging for conventional metallurgy due to their high melting points and reactivity, are well suited for cold spray additive manufacturing. Radiofrequency plasma spheroidization enables preparation of powders with optimal characteristics for this process. This study focuses on producing spherical Al₀.₅NbTa₀.₈Ti₁.₅V₀.₂Zr powder from high‑energy‑milled elemental powders, optimizing milling and spheroidization parameters to improve quality, homogeneity, and particle size distribution. By partially substituting metal hydrides for pure metals, oxygen content variation was examined. The microstructure and phase composition of spheroidized powders were analyzed, revealing atomic‑scale homogeneity formed through high‑enthalpy plasma reactions and rapid cooling. The resulting powders require no complex heat treatment and are directly suitable for additive manufacturing. Initial cold‑spray samples of the Al₀.₅NbTa₀.₈Ti₁.₅V₀.₂Zr alloy will be evaluated for microstructure, phases, and mechanical properties.
Proceedings Inclusion? Undecided

OTHER PAPERS PLANNED FOR THIS SYMPOSIUM

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A Novel Phenomenological Approach for Predicting the Transport Properties of Transition-Metal High Entropy Alloys at Elevated Temperatures
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Advancing HEA Design: Database Expansion and Integrated Modelling
An Efficient Framework for Predicting Order in Multicomponent Systems
An Innovative Radial Gradient Design of a Copper-Based High Entropy Alloy (Cu-HEA)/Chromium (Cr) Bi-Metallic Structure Fabricated Using Powder-Metallurgy Hot Isostatic Pressing for Extreme Environment Applications
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CALPHAD-Guided Design of Ru-B2 Strengthened Nb-Based Refractory Alloys
Chemical Short-Range Order in High-Entropy Alloys: Detection, Thermodynamics and Kinetic Nature and Property Control
Chemical Synthesis of HEA Powders from Metal Oxides for Catalyst Applications
Chemical Synthesis of High Entropy Alloy Nanopowders for Catalyst Applications
Competing Entropy Versus Enthalpy Driven Stabilization of Ordered Phases in a Al0.3CoFeNi High Entropy Alloy Leading to Excellent Tensile Properties
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Corrosion and Passivation of Multi-Principal Element Alloys in AqueousSolutions
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Deformation Behaviour of GRX-810 at Extreme Temperatures
Design and Development of Lightweight Medium- and High-Entropy FeMnAlC Steels
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Designing Oxidation-Resistant AlVCrZrNbx Lightweight Refractory HEAs Through Nb Variable via Powder Metallurgy
Design, Synthesis, and Properties of WTaCrVHf High Entropy Alloys
Development and Characterization of a New Multicomponent Alloy Based on 30Ti-30Nb-5Fe-30Mn-5Al (at%) for Biomedical Applications
Development of High Specific Modulus Multicomponent Alloys with an FCC Structure
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Development of Processing Maps for Medium Entropy Alloy GRX-810 by HVOF
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Discovery of High-Strength, High-Plasticity, and Oxidation-Resistant RHEAs Through Data-Driven Modeling
Effect of Al Content on the Microstructure and Mechanical Behaviour of (CrFeNiCu)100-xAlx (x = 0 – 15 at.%) High Entropy Alloys
Effect of Mechanical Alloying on the Mechanical and Thermal Properties of FeCoCuNbMo High-Entropy Alloy
Effect of Si Addition on Microstructure and Tensile Properties of Cast CrFeCoNi Alloys
Effect of V2O5 Addition on the Reduction Processing of Equimolar CoFeNiMn Alloys Using Dilute Hydrogen
Effects of Entropy Stabilization and Phase Evolution on Hydrogen Storage Activation in TiFeCoNiCu High-Entropy Alloys
Effects of Precipitate-Forming Species and Grain Refinement on the Microstructural Evolution in Neutron-Irradiated CrFeMnNi and CrFeMnNiTiAl Compositionally Complex Alloys
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Element-Specific Magnetic Behavior in FeCrMnCoNi, CrCoNi and MnCoNi Multi Principal Element Alloy Thin Films
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Fast‑Track Microstructure Design in HEAs Using Pseudo‑Binary Diffusion Couples
HEAs with Exceptional Combination of Strength and Ductility
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High-Entropy Oxide Catalysts for the Reductive Depolymerization of Organosolv Iignin
High-Temperature Microstructural Stabilization and Oxidation Behavior of Al–Mg Alloys Modified with Zr, Er, and Yb
High-Throughput Assessment of Equilibrium Phases in Al–Ti–Nb–Mo–V/Cr Systems
High-Throughput Design and Experimental Validation of Low-Modulus BCC High-Entropy Alloys for Next-Generation Biomedical Implants
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High Temperature Oxidation of AlCrFeNiTiₓ High Entropy Alloys
Improved Oxidation Resistance of NbTiZr under Thermal Cyclic Conditions
In-Situ Spatiotemporal Characteristics of Deformation: From Microstructurally Simple Metals to Complex Concentrated Alloys
Influence of Chemical Short-Range Order on Stacking Fault Energy and Deformation in a CoCrNi-based Alloy
Influence of Ti on the Mechanical Properties and Strengthening Mechanisms of In-Situ Alloyed CoCrNi Processed via Laser Powder Bed Fusion
Investigation of the Mechanical Response and Work Hardening Characteristics of High-Magnesium ECO-Almag Alloys Processed by Cold Forging
Irradiation Resistance of High-Entropy Alloys for Accelerator Beam Window Applications
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Machine Learning-Driven Discovery of Oxidation-Resistant, High-Strength Refractory High Entropy Alloys
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Manufacturability-Driven Discovery of Quinary High-Entropy Alloys From Conventional Alloy Systems
Mechanistic Insights Into Corrosion of Ultrafine- and Coarse-Grained HEAs: Roles of Grain Size and Passive Film Evolution
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