Effect of Contact Gap in Directional Solidification of AlSiFe Alloys

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

Abstrakty

EN

One of the methods to study solidification of alloys and metals is directional solidification. In the paper the effect of the contact gap between the analyzed specimen and the bottom heater was analysed. The occurring contact gap caused the increase in planned solidification velocity. For the facility calibration the methodology with M coefficient was applied. The experiments revealed efficient values of M and allowed to conduct efficiently the directional solidification of AlSiFe alloys in wide range of growth rates. The effect of the contact gap seems to be random phenomena and most difficult factor influencing precisely planned directional solidification.

Słowa kluczowe

EN

directional solidification; aluminium alloys; calibration; intermetallic phases

PL

krzepnięcie kierunkowe; stop aluminium; kalibracja; faza międzymetaliczna

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2014
• Tom: Vol. 14, iss. 3 spec.
• Strony: 41--44
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Mikołajczak P.

• Poznan University of Technology, Institute of Materials 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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• [3] Tomaszewski, P.E. (2002). Jan Czochralski - Father of the Czochralski method. Journal of Crystal Growth. 236, 1-4. DOI: dx.doi.org/10.1016/S0022-0248(01)02195-9.
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• [5] Alkemper, J., Sous, S., Stoker, C. & Ratke L. (1998). Directional solidification in an aerogel furnace with high resolution optical temperature measurements. Journal of Crystal Growth. 191, 252-260. DOI: dx.doi.org/10.1016/ S0022-0248(98)00114-6.
• [6] Steinbach, S. & Ratke, L. (2004). In situ optical determination of fraction solid. Scripta Materialia. 50, 1135-1138.DOI: dx.doi.org/10.1016/j.scriptamat.2004.01.023.
• [7] Steinbach, S. (2005). The influence of fluid flow on the microstructure evolution of directional solidified Al-Si and ASi-Mg alloys (in German). Ph.D. Thesis. RWTH, Germany.
• [8] Ratke, L. (2009). Solidification in Artemis – July 2nd 1997 – Feb 2009 (in German). Not published. Köln, Germany.
• [9] Mikolajczak, P. & Ratke, L. (2012). The role of fluid flow and intermetallic phases in the formation of the primary Alphase in AlSi alloys. IOP Conf. Ser.: Mater. Sci. Eng. 27, 012024. DOI: 10.1088/1757-899X/27/1/012024.
• [10] Mikolajczak, P., Ratke, L. (2011). Intermetallic Phases and Microstructure in AlSi Alloys Influenced by Fluid Flow. The Minerals, Metals & Materials Society (TMS). DOI: 10.1002/9781118062173.ch104.
• [11] Mikolajczak, P. & Ratke, L. (2013). Directional solidification of AlSi alloys with Fe intermetallic phases. Archive of Foundry Engineering. 14(1), 75-78.
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