About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
2026 Technical Division Student Poster Contest
|
| Presentation Title |
SPG-63: Thermal-Free Powder Consolidation of High-Entropy Alloys Via High-Pressure Torsion |
| Author(s) |
Benjamin A. Roush, Laxman Bhatta, Megumi Kawasaki, Klaus-Dieter Liss, Joshua Norton |
| On-Site Speaker (Planned) |
Benjamin A. Roush |
| Abstract Scope |
In this study, a new powder consolidation strategy is demonstrated using the severe plastic deformation technique of high-pressure torsion (HPT), which is traditionally applied to bulk metals for microstructural refinement. Pre-alloyed CoCrFeNiMn high-entropy alloy (HEA) powders are consolidated by HPT at 6 GPa for 15 turns at room temperature to produce a bulk nanostructured HEA. The resultant mechanical properties and microstructure are systematically examined. The hardness is measured to be uniform across the entire disk diameter. Tensile properties are evaluated using digital image correlation to capture strain development in the nanostructured HEA. The nanostructure is characterized by TEM and further estimated using X-ray diffraction techniques, while fracture surfaces are analyzed using SEM. These results demonstrate the feasibility of using HPT to manufacture bulk nanostructured metals with enhanced properties without the need for thermal energy input. |
| Proceedings Inclusion? |
Undecided |