| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| 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 |
The Microstructure, Morphology and Mechanical Properties of Rapidly Solidified Al-10wt%Si-0.4wt%Sc Alloy |
| Author(s) |
Akankshya Sahoo, Abdoul Aziz Bogno, Hani Henein |
| On-Site Speaker (Planned) |
Akankshya Sahoo |
| Abstract Scope |
Sc addition in hypereutectic level (>0.55wt%) in binary Al-Sc yields improved mechanical properties due to the precipitation of primary Al3Sc during solidification. However, because of its low market availability and high cost, it is economically more attractive to use Sc in hypoeutectic level (<0.55wt %). Rapid solidification of hypoeutectic Al-Sc alloys can induce grain refinement, solid solution and Al3Sc precipitation hardening, so that minor Sc addition can yield stronger Al-alloys. This work investigates the effects of 0.4wt %Sc addition on Al-10wt%Si over a wide range of thermal histories. DSC and Impulse Atomization were used to generate controlled solidification microstructures over a wide range of cooling rates (0.01-10^4K/s). Microstructural characterization and mechanical properties evaluation of the generated samples were carried out via XRD, SEM, EPMA, and Vickers indentation microhardness tests. The effects of aging the as-rapid solidified Al-10wt%Si-0.4wt%Sc were also determined. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Solidification, Aluminum, Powder Materials |