About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys V: Mechanical Behavior
|
| Presentation Title |
Understanding cyclic straining induced extraordinary tensile strengthening in an Al0.1CoCrFeNi high entropy alloy via in situ neutron diffraction |
| Author(s) |
Dunji Yu, Ning Zhu, Yan Chen, Ke An |
| On-Site Speaker (Planned) |
Dunji Yu |
| Abstract Scope |
The Al0·1CoCrFeNi high-entropy alloy is well known for its exceptional work hardening behavior and superior strength–ductility synergy. Recent studies have shown that cyclic torsion can further enhance these properties by inducing gradient microstructures and dislocation cell formation. In this work, we demonstrate that even simple axial cyclic straining leads to extraordinary tensile strengthening with limited loss in ductility. To investigate the underlying mechanisms, we employed in situ neutron diffraction during mechanical testing, complemented by post-mortem EBSD and TEM analyses. The results reveal that stacking faults and evolving dislocation structures are key contributors to the observed strengthening effect. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Mechanical Properties, Characterization |