Three Dimensional Morphology of β-Al₅FeSi Intermetallics in AlSi Alloys

• Autorzy: Mikołajczak P. , Ratke L.

Identyfikatory

DOI

10.1515/afe-2015-0010

• Języki publikacji: EN

Abstrakty

EN

Iron is the most common and detrimental impurity in casting alloys and has been associated with many defects. The main consequence of the presence or adding of iron to AlSi alloys is the formation Fe-rich intermetallics with especially deleterious β-Al₅FeSi. β-Al₅FeSi phases are most often called needles on 2D micro sections, whilst platelets in 3D geometry. The x-ray tomography results have demonstrated Fe-rich phases with shapes different from simple forms such as needles or platelets and presented bent and branched phases. β grown as complicated structure of bent and branched intermetallics can decrease feeding ability, strengthen pores nucleation and eutectic colonies nucleation leading to lower permeability of mushy zone and porosity in the castings.

Słowa kluczowe

EN

aluminum alloy; intermetallics; β-Al5FeSi; X-ray tomography; morphology; solidification

PL

stop aluminium; intermetalik; β-Al5FeSi; tomografia rentgenowska

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2015
• Tom: Vol. 15, iss. 1
• Strony: 47--50
• Opis fizyczny: Bibliogr. 16 poz., rys., wykr.

Twórcy

autor

Mikołajczak P.

• Institute of Materials Technology, Poznan University of Technology, Piotrowo 3, 60-965 Poznan, Poland; Institut für Materialphysik im Weltraum, German Aerospace Center DLR

autor

Ratke L.

• Institut für Werkstoff-Forschung, German Aerospace Center DLR, Linder Höhe, 51147 Köln, Germany

Bibliografia

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