Solidification of aluminum-copper B206 alloys with iron and silicon additions

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DOIResolve DOI: http://doi.org/10.1007/s11661-010-0293-4
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TypeArticle
Journal titleMetallurgical and Materials Transactions: A
ISSN1073-5623
1543-1940
Volume41
Issue11
Pages28442855; # of pages: 12
SubjectSolidification; Microstructure; Intermetallics; Thermal analysis; DSC
AbstractSolidification of B206 aluminum alloys with additions of iron and silicon was studied to investigate their combined effect on the formation and precipitation of intermetallics, particularly Fe-rich phases. Iron is precipitated mainly by either β(CuFe) or α(MnFe) phases, or both depending of the iron and silicon content, as well as the cooling rate. It was found that in alloys having up to 0.3 wt pct Fe, the precipitation of β(CuFe) phase can be largely suppressed if the ratio Si/Fe is close to 1 and the cooling rate is moderately high. The low mobility of the large facets of the β(CuFe) platelets is likely the cause limiting the amount of this phase, especially when the iron atoms have the possibility to be captured by another phase, in this case, the α(MnFe) phase.
Publication date
PublisherASM International
LanguageEnglish
AffiliationNational Research Council Canada (NRC-CNRC); NRC Industrial Materials Institute
Peer reviewedNo
NRC number51115
NPARC number16602711
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Record identifier01d0c96b-8b48-4d88-bd6b-896e78f61e9f
Record created2011-01-10
Record modified2016-05-09
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