About this Abstract |
Meeting |
MS&T22: Materials Science & Technology
|
Symposium
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Alloy Phase Transformations at Elevated Temperatures
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Presentation Title |
Phase Stability in Cast and Additively Manufactured Al-9 wt%Cu-6 wt%Ce Alloy |
Author(s) |
Alice E. Perrin, Sumit Bahl, Donovan Leonard, Alex Plotkowski, Amit Shyam, Ryan DeHoff, Ying Yang |
On-Site Speaker (Planned) |
Alice E. Perrin |
Abstract Scope |
Additive manufactured (AM) eutectic Al alloy systems have been studied extensively for advantageous thermal and mechanical properties due to the interesting and refined microstructures and Al-Cu-Ce alloys has been identified as a promising system of study. Phase identification of the microstructure of AM Al-Cu-Ce has revealed the Al8Cu3Ce phase, a phase which was not previously included on simulated or experimental phase diagrams of the cast Al-Cu-Ce system, prompting additional thermodynamic modelling of the system. These models were experimentally validated with cast Al-Cu-Ce alloys. We found that despite the refined microstructure of the AM alloys, the phases formed were consistent with the cast samples, suggesting that AM processing does not significantly affect the formation and stability of phases compared with traditional casting. These results have resolves inconsistent previous descriptions of the Al-Cu-Ce ternary phase diagram in the Al-rich region. |