| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Multi-Principal Element Alloys IV: Mechanical Behavior
|
| Presentation Title |
Achieving High Strength and Ductility in Single-Phase Refractory Multi-Principle-Element Alloys via DFT-Guided Tailoring of Chemical Short-Range Order |
| Author(s) |
Hailong Huang, Prashant Singh, Duane D Johnson, Gaoyuan Ouyang, Rameshwari Naorem, Ryan Ott, Rajarshi Banerje, Vishal Soni, Thomas Scharf, Nicolas Argibay |
| On-Site Speaker (Planned) |
Hailong Huang |
| Abstract Scope |
Refractory multi-principal-element alloys (RMPEAs) are desirable high-temperature materials due to their excellent mechanical performance, e.g., far surpassing the softening resistance of state-of-the-art materials like Ni-based superalloys. However, most RMPEAs suffer from poor room-temperature (RT) ductility, making them difficult to process and limiting their commercial use. This presentation will focus on results from density-functional theory (DFT)-guided tailoring of chemical short-range ordering (SRO) in a single-phase body-centered-cubic (bcc) RMPEA, which resulted in an exceptional combination of RT tensile ductility and strength. Atom probe tomography (APT) was used to confirm the presence of predicted Ti-rich clusters, and TEM to better understand the link between SRO and measured experimental strength, tensile ductility, and work hardening. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
High-Entropy Alloys, |