The solidification and structure of Al-17wt.%Si alloy modified with intermetallic phases containing Ti and Fe

• Autorzy: Piątkowski J. , Formanek B.
• Języki publikacji: EN

Abstrakty

EN

The article describes the process of casting and solidification of Al-17wt.%Si alloy that have been modified with composite powder containing the intermetallic phases of Ti and Fe. The chemical and phase composition of the applied modifier was described with the following formula: FeAlx-TiAlx-Al2O3. Applying the method of thermal analysis ATD, the characteristic parameters of the solidification process were determined, and exo-and endothermic effects of the modifying powder on the run of the silumin solidification curves were observed. By the methods of light, scanning, and X-ray microscopy, the structure of alloy and the chemical composition of the dispersion hardening precipitates were examined. A change in the morphology of Al-Si eutectic from the lamellar to fibrous type was reported together with changes in the form of complex eutectics of an Al-Si-Ti and Al-Si-Fe type and size reduction of primary silicon crystals.

Słowa kluczowe

EN

aluminium composite casting; intermetallic phases; modification; hypereutectic silumin

PL

aluminiowy odlew kompozytowy; faza międzymetaliczna; modyfikacja; silumin nadeutektyczny

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2011
• Tom: Vol. 11, iss. 4
• Strony: 194--198
• Opis fizyczny: Bibliogr. 18 poz., rys., tab., wykr.

Twórcy

autor

Piątkowski J.

autor

Formanek B.

• Chair of Materials Technology, Silesian University of Technology, Krasińskiego 8, 40-019 Katowice, Poland,

Bibliografia

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