About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Ultrafine-Grained and Heterostructured Materials (UFGH) XIV
|
| Presentation Title |
Microstructure and Mechanical Behavior of Bulk Nanostructured High-Entropy Alloy Produced by High-Pressure Torsion Powder Consolidation |
| Author(s) |
Laxman Bhatta, Joshua D Norton, Jae-il Jang, Klaus-Dieter Liss, Megumi Kawasaki |
| On-Site Speaker (Planned) |
Laxman Bhatta |
| Abstract Scope |
This study investigates the microstructural evolution and mechanical behavior of bulk nanostructure CrMnFeCoNi high-entropy alloy (HEA) produced through powder consolidation via high-pressure torsion. In practice, the pre-alloyed powder is severe-plastically compacted into 10 mm diameter disks and subjected to 1, 2, 5, and 15 HPT turns under 6 GPa. Hardness of the nanostructured HEA is mapped to evaluate macroscopic microstructural evolution as a function of radial position and number of turns. Tensile testing coupled with digital image correlation analysis and nanoindentation are conducted to examine strength-ductility relationships and strain rate sensitivity. X-ray diffraction analysis is applied to examine crystallite size, microstrain and dislocation density. The results are compared with the earlier reports on cast CrMnFeCoNi HEA subjected by HPT. This work contributes to understanding the significance of the powder-based severe plastic deformation processing to microstructure and mechanical properties in HEA. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Powder Materials, High-Entropy Alloys, Mechanical Properties |