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Characterisation of rosette formation in an aluminium–silicon alloy

Ferdian, Deni and Thébault, Yannick and Freulon, Alexandre and Lacaze, Jacques Characterisation of rosette formation in an aluminium–silicon alloy. (2015) International Journal of Cast Metals Research, The, 28 (5). 290-294. ISSN 1364-0461

(Document in English)

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Official URL: http://dx.doi.org/10.1179/1743133615Y.0000000014


Differential thermal analysis has been used to investigate the effect of cooling rate on rosette formation during solidification of a synthetic Al–Fe–Si alloy. Rosettes can be characterised as a very fine multiphase structure within more or less convex areas dispersed in the matrix. Their formation during solidification is related with liquid entrapment and high solidification undercooling associated with the need of independent nucleation events of second phases. It is here shown that their density and internal coarseness depend on cooling rate. Further, metallographic observation of rosettes in contact with large precipitate of b-Al9Fe2Si2 phase allowed to conclude that this latter phase does not help silicon nucleation.

Item Type:Article
Additional Information:Thanks to Taylor & Francis editor. The definitive version is available at http://www.tandfonline.com/ The original PDF of the article can be found at http://www.tandfonline.com/doi/abs/10.1179/1743133615Y.0000000014
HAL Id:hal-01481000
Audience (journal):International peer-reviewed journal
Uncontrolled Keywords:
Institution:French research institutions > Centre National de la Recherche Scientifique - CNRS (FRANCE)
Université de Toulouse > Institut National Polytechnique de Toulouse - Toulouse INP (FRANCE)
Université de Toulouse > Université Toulouse III - Paul Sabatier - UT3 (FRANCE)
Other partners > Universitas Indonesia - UI (INDONESIA)
Laboratory name:
European Space Agency
Deposited On:02 Mar 2017 08:55

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