| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
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| Symposium
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TMS-DGM Symposium: A Joint US-European Symposium on Linking Basic Science to Advances in Manufacturing of Lightweight Metals
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| Presentation Title |
Study of the Solidification Pathways of Hypo/hyper-eutectic Al-Ce over a Wide Range of Thermal Histories |
| Author(s) |
Akankshya Sahoo, Abdoul Aziz Bogno, Hani Henein |
| On-Site Speaker (Planned) |
Akankshya Sahoo |
| Abstract Scope |
High temperature (>300°C) applications of precipitation-strengthened Al-alloy are limited by coarsening or dissolution of the strengthening precipitates. Unlike the conventional Al-alloys, the strengthening Al11Ce3 intermetallic in Al-Ce is very stable at high temperatures, making the alloy microstructurally and mechanically stable. In addition, the precipitation of Al11Ce3 does not require post-processing heat treatment, making the alloy economically attractive. Tailoring Al-Ce alloys for specific applications requires the knowledge of their microstructure formation over a wide range of thermal histories. This work reports on the solidification-developed microstructures, over a wide range of cooling rates (0.1-10^4K/s), of hypo/hyper-eutectic binary Al-Ce and Al-Ce-X multicomponent alloys generated by DSC and Impulse Atomization. Qualitative and quantitative microstructural characterization were conducted using XRD, OM, SEM, EPMA to determine the influence of cooling rate and Ce concentration. The solidification pathways and resulting microstructures were subsequently determined and a critical relationship between processing/microstructure/properties of Al-Ce alloys was developed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Aluminum, Powder Materials |