| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
| Presentation Title |
Strength-Ductility Synergies in CuCoFeMnNi High-Entropy Alloys: Effects of Deformation and Recrystallization |
| Author(s) |
Nitish Bibhanshu |
| On-Site Speaker (Planned) |
Nitish Bibhanshu |
| Abstract Scope |
This work discusses the microstructural modifications and associated strengthening mechanisms caused by two different deformation paths at room temperature (RT) and cryo temperature (CT). The microstructural modifications through unidirectional and cross rolling led to high strength when performed at cryo temperature. High strength with low ductility was identified for the 90% rolled CuCoFeMnNi high entropy alloy (HEA), which was a consequence of the formed micro- and shear-bands. The bands were finer for the cryo-temperature rolled specimens, whereas relatively thicker bands were identified for the room temperature rolled specimens. To enhance the ductility of the rolled alloy, specimens were subjected to annealing at a temperature of 900°C for 5 minutes. The annealing caused the formation of equiaxed grains in all the specimens, but finer grains were identified after cryo-rolling. The cryo-rolled samples after annealing were found to have a better combination of strength and ductility. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Characterization |