X-ray tomography investigation of Fe-rich intermetallics in AlSi alloys

• Autorzy: Mikołajczak P. , Ratke L.
• Języki publikacji: EN

Abstrakty

EN

Iron exists as a common impurity element in AlSi foundry alloys. The main consequence of the presence or adding of iron to AlSi alloys is the formation Fe-rich intermetallics with especially deleterious β-Al₅FeSi. This work aims to identify the role of fluid flow on the microstructure and intermetallics in Al-9 wt.% Si-0.2/0.5/1.0 wt.% Fe alloys directionally solidified under defined thermal and fluid flow conditions and extensively uses 3D x-ray tomography to get a better insight into their morphology and formation. The results have revealed the growth of larger and more dense β-Al₅FeSi intermetallics in the specimen centre as an effect of forced flow. The reconstructions confirmed that the course of number density at the specimen cross section increases from the specimen edge to its centre.

Słowa kluczowe

EN

aluminum alloy; intermetallics; β-Al5FeSi; X-ray tomography; melt flow

PL

stop aluminium; związek międzymetaliczny; β-Al5FeSi; tomografia rentgenowska; szybkość przepływu

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2013
• Tom: Vol. 13, iss. 4
• Strony: 79--82
• Opis fizyczny: Bibliogr. 14 poz., rys.

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, Linder Höhe, 51147 Köln, Germany

autor

Ratke L.

• Institut für Materialphysik im Weltraum, German Aerospace Center DLR, Linder Höhe, 51147 Köln, Germany

Bibliografia

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