| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
| Presentation Title |
Intermetallic Alloys: Ductility, Structural Order, and High Entropy or Not |
| Author(s) |
Joseph S. Poon, Jie Qi, Diego Ibarra Hoyos, Xuesong Fan, Nathan Grain, Peter Connors, Jishnu Bhattacharyya, Michael Widom, Peter Liaw, Sean Agnew, John Scully |
| On-Site Speaker (Planned) |
Joseph S. Poon |
| Abstract Scope |
Intermetallic alloys (IMAs) are known for their high melting temperatures and appealing structural and functional properties, but they often suffer from a lack of ductility. To address this, we use an adaptive design approach that integrates computation and experimentation to investigate the impact of structural order and disorder on the ductility of IMAs. Although the high-entropy alloy concept allows for compositional flexibility in alloy design, significant fundamental insights can also be gained from studying binary and ternary alloy systems. High-throughput machine-learning (ML) models, implemented with active learning, enable accurate phase prediction. Additionally, ML coupled with Monte Carlo simulation reveals the effect of structural order on ductility. This study is further supported by neutron scattering experiments. Our approach has led to the development of some low-density, low-cost, and ductile high-entropy IMAs. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, Modeling and Simulation, Mechanical Properties |