About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Accelerated Discovery and Insertion of Next Generation Structural Materials
|
| Presentation Title |
Accelerated Discovery of Additively Manufacturable Al-Zr-Er-Ni Alloys with Enhanced Strength and Ductility Via CALPHAD-Based ICME Technique |
| Author(s) |
Zhaoxuan Ge |
| On-Site Speaker (Planned) |
Zhaoxuan Ge |
| Abstract Scope |
Accelerated by calculation of phase diagram (CALPHAD)-based integrated-computational material engineering (ICME) and machine learning techniques, this study discovers a series of additively manufacturable (AM) Al-Zr-Er-Ni alloys with great mechanical performance and thermal stability at 400°C. Two alloy design examples are highlighted. In the first design, microstructural analysis reveals precipitates can promote micro-cavitation and reduce ductility. By following a composition guideline suggested by simulations, as-built ductility was improved to 18%, surpassing the ~10% typical ductility of AM Al alloys. In the second design, eutectic lamellar structure and high volume fraction of nanoprecipitation were integrated to increase as-built strength to 530 MPa—35% higher than strongest cast Al, Al 7075. Even after 6 h at 400 °C, yield strength remains above 480 MPa. These results demonstrate a methodology to enable rapid discovery of high-performance alloys and offer a pathway for deploying next-generation structural materials in demanding industrial environments. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, ICME |