About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing Materials, Processes and Applications for Energy Industry
|
| Presentation Title |
Additive Friction Stir Deposition of Novel Al-Ce Alloys |
| Author(s) |
Vishal Soni, Maria Gonzalez, Sonali Ravikumar, Liam Menchaca, Naveen Kumar Nagaraja, Ravi sankar Haridas, Adam Loukus, David Weiss, Rajiv Mishra, Vijay Vasudevan |
| On-Site Speaker (Planned) |
Vishal Soni |
| Abstract Scope |
A process-specific alloy design strategy was employed to achieve exceptional as-deposited strength-ductility synergy in Al–Ce alloys, eliminating the need for post-aging treatments. Al–Ce alloys, known for their excellent thermal stability due to Al11Ce3 phase, were designed using CALPHAD to combine solid solution, precipitation, and composite strengthening. Additive friction stir deposition (AFSD) was used to fabricate 3D builds from cast material, where severe plastic deformation and localized thermal cycles fragmented the Al11Ce3 lamellae and triggered in-situ formation of fine Al3Sc precipitates, resulting in significant grain refinement and homogeneous dispersion of strengthening phases. Mechanical testing revealed remarkable improvements: while the cast alloy fractured at 230 MPa with no ductility, the AFSD alloy achieved a yield strength of 385 MPa, UTS of 530 MPa, and ~15% plastic strain. These as-deposited properties surpassed those of aged or LPBF/DED counterparts, demonstrating AFSD’s potential as a process-integrated tool for producing high-performance, energy-efficient aluminum alloys. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, High-Temperature Materials |