| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing and Alloy Design: Bridging Fundamental Physical Metallurgy, Advanced Characterization Techniques, and Integrated Computational Materials Engineering for Advanced Materials
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| Presentation Title |
Additive Friction Stir Deposition of Al-Ce Alloys |
| Author(s) |
Vishal Soni, Devin Davis, Liam Menchaca, Naveen Kumar Nagaraja, David Weiss, Rajiv Mishra, Vijay Vasudevan |
| On-Site Speaker (Planned) |
Vishal Soni |
| Abstract Scope |
High-temperature aerospace and structural applications find Al-Ce alloys intriguing due to their ability to resist creep and maintain stability at elevated temperatures. This remarkable property is attributed to the thermally stable intermetallic compound Al11Ce3, which exists as lamellae in Al-Al11Ce3 eutectic microstructures. This study uses Additive Friction Stir Deposition (AFSD) to refine the microstructure, breaking up the Al11Ce3 lamellae into smaller, evenly dispersed particles. Additionally, the alloys are designed using CALPHAD simulations to exploit solid solution strengthening and precipitation strengthening, along with the composite strengthening achieved by the eutectic mixture. Microstructures and tensile properties of both as-cast and AFSD materials were examined using SEM, TEM, APT, and small-scale tensile tests. The results demonstrate significant improvement in mechanical properties at room and high temperatures due to AFSD, highlighting the contributions of solid solution, composite, and precipitation strengthening mechanisms in improving the alloy's performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Aluminum, ICME |