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TMS-DGM Symposium: A Joint US-European Symposium on Linking Basic Science to Advances in Manufacturing of Lightweight Metals: Poster Session
Sponsored by: Deutsche Gesellschaft für Materialkunde e.V. (DGM): German Materials Society , TMS Materials Processing and Manufacturing Division, TMS: Shaping and Forming Committee
Program Organizers: William Joost; Norbert Hort, Helmholtz-Zentrum Hereon

Monday 5:30 PM
March 15, 2021
Room: RM 26
Location: TMS2021 Virtual

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The Microstructure, Morphology and Mechanical Properties of Rapidly Solidified Al-10wt%Si-0.4wt%Sc Alloy: Akankshya Sahoo¹; Abdoul Aziz Bogno¹; Hani Henein¹; ¹University of Alberta
    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.

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