Obtaining of Al–Si foundry alloys using amorphous microsilica – Crystalline silicon production waste

•Gibbs free energy calculations have shown the possibility of producing silumins using microsilica.•Two methods for producing hypoeutectic and hypereutectic silumins have been developed.•Injecting of silicon dioxide into aluminum melt in the argon flow allowed to obtain silumins of 6 wt % Si content...

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Bibliographic Details
Published in:Journal of alloys and compounds 2019-10, Vol.806, p.806-813
Main Authors: Kuz'min, Mikhail P., Chu, Paul K., Qasim, Abdul M., Larionov, Leonid M., Kuz'mina, Marina Yu, Kuz'min, Petr B.
Format: Article
Language:English
Subjects:
Aluminum
Aluminum alloys
Microsilica
Silica fume
Silicon
Silicon dioxide
Silumins
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Summary:•Gibbs free energy calculations have shown the possibility of producing silumins using microsilica.•Two methods for producing hypoeutectic and hypereutectic silumins have been developed.•Injecting of silicon dioxide into aluminum melt in the argon flow allowed to obtain silumins of 6 wt % Si content.•Induction melting of silica-containing mixture allowed to obtain silumins of 16 wt % Si content.
ISSN:0925-8388
1873-4669
DOI:10.1016/j.jallcom.2019.07.312