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Silicon crystal formation during DC casting of aluminium-silicon alloys
Mid Sweden University, Faculty of Science, Technology and Media, Department of Natural Sciences, Engineering and Mathematics.ORCID iD: 0000-0002-3622-4247
2009 (English)In: TMS Light Metals 2009, Minerals, Metals & Materials Society, 2009, p. 837-841Conference paper, Published paper (Refereed)
Abstract [en]

The formation of polyhedral silicon crystals in aluminium 7-8% silicon alloys has been studied in industrial ingots. It was found that the nucleation temperature and the cooling rate were important factors influencing the amount and size of the polyhedral crystals. To avoid large particles in the as cast material early nucleation have to be suppressed and the phosphorous content should be kept low. Modeling of diffusion-controlled growth of the silicon phase in this type of aluminium-silicon alloys shows how the nucleation temperature influences the morphology of the precipitated silicon.

Place, publisher, year, edition, pages
Minerals, Metals & Materials Society, 2009. p. 837-841
Series
TMS Light Metals, ISSN 0147-0809 ; 2009
Keywords [en]
Aluminum; Coupled zone; DC casting; Nucleation; Polyhedral crystals; Silicon
National Category
Materials Engineering
Identifiers
URN: urn:nbn:se:miun:diva-10787ISI: 000265146400146Scopus ID: 2-s2.0-71849094556ISBN: 978-087339731-5 (print)OAI: oai:DiVA.org:miun-10787DiVA, id: diva2:283481
Conference
Light Metals 2009 - TMS 2009 Annual Meeting and Exhibition; San Francisco, CA; 15 February 2009 through 19 February 2009
Available from: 2009-12-28 Created: 2009-12-28 Last updated: 2013-03-21Bibliographically approved

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Carlberg, Torbjörn

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