About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys V: Mechanical Behavior
|
| Presentation Title |
Tuning Mechanical Behavior in AlxCoCuFeNi High-Entropy Alloys via Nanolamellar Architectures and Nanoparticle Reinforcement |
| Author(s) |
Shuai Chen, Ping Liu, Zachary Aitken, Zhigen Yu, David J Srolovitz, Peter K Liaw, Yong-Wei Zhang |
| On-Site Speaker (Planned) |
Yong-Wei Zhang |
| Abstract Scope |
This talk presents two computational studies on tailoring the mechanical behaviour of AlxCoCuFeNi high-entropy alloys (HEAs). First, we demonstrate that nanolamellar HEAs with alternating high- and low-Al layers exhibit ideal plasticity and a reversible shape memory effect due to phase transformation and confined dislocation dynamics. Second, we investigate HEAs reinforced with AlNi₃ nanoparticles and reveal simultaneous enhancement in tensile strength and ductility. The nanoparticles suppress phase transformation and dislocation nucleation, delaying failure and resulting in a robust lower-bound rule-of-mixtures behaviour. Together, these studies highlight the critical roles of nanoscale architecture and chemical tuning in designing HEAs with superior and tunable mechanical performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Computational Materials Science & Engineering, High-Entropy Alloys, Mechanical Properties |