The Eulerian multiphase model of centrifugal casting process of particle reinforced Al matrix composites

• Autorzy: Dolata A. J. , Golak S. , Ciepliński P.

Warianty tytułu

PL

Wielofazowy model eulerowski procesu odlewania odśrodkowego kompozytu o osnowie stopu Al zbrojonego cząstkami

• Języki publikacji: EN

Abstrakty

EN

This article discusses a new model of the centrifugal casting process which uses the full Eulerian approach to modelling composite suspension dynamics. The proposed model, in contrast to models based on the Lagrangian approach, allows one to consider such important phenomena as the presence of maximum packing of reinforcing particles, or the change in viscosity suspension caused by changes in the reinforcement volume fraction. These phenomena are essential for the final result of the composite casting process. The paper presents the results of numerical experiments using the developed model. Simulation of the casting process of the AlSi7MgSr (AK7) aluminium alloy with silicon carbide and graphite was performed. The results showed that the developed model of the centrifugal casting process enables one to recognize the phenomena that are impossible to capture by measurement techniques available today.

PL

Omówiono nowy model procesu odlewania odśrodkowego, który wykorzystuje pełne podejście eulerowskie do modelowania dynamiki zawiesiny kompozytowej. Dzięki temu zaproponowany model, w przeciwieństwie do modeli opartych o podejście lagrangowskie, umożliwia uwzględnienie tak ważnych zjawisk, jak: istnienie maksymalnego, granicznego upakowania cząstek zbrojenia czy też wywołane zmianami udziału zbrojenia lokalne zmiany lepkości zawiesiny. Zjawiska te są kluczowe dla końcowego wyniku procesu odlewania kompozytu. W artykule zaprezentowano wyniki eksperymentów numerycznych wykorzystujących opracowany model. Przeprowadzono symulacje procesu odlewania zawiesiny stopu aluminium (AlSi7MgSr) z węglikiem krzemu i z grafitem. Uzyskane wyniki wykazały, że opracowany model procesu umożliwia rozpoznanie zjawisk niemożliwych do uchwycenia dostępnymi współcześnie technikami pomiarowymi.

Słowa kluczowe

EN

particle reinforced metal matrix composites; PMMCs; centrifugal casting; modelling

PL

kompozyty o osnowie metalowej zbrojone cząstkami; PMMCs; odlewanie odśrodkowe; modelowanie

• Wydawca: Polskie Towarzystwo Materiałów Kompozytowych
• Czasopismo: Composites Theory and Practice
• Rocznik: 2017
• Tom: R. 17, nr 4
• Strony: 200--205
• Opis fizyczny: Bibliogr. 21 poz., rys.

Twórcy

autor

Dolata A. J.

• Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, Institute of Material Science, ul. Krasińskiego 8, 40-019 Katowice, Poland

autor

Golak S.

• Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, Department of Industrial Informatics, ul. Krasińskiego 8, 40-019 Katowice, Poland

autor

Ciepliński P.

• Silesian University of Technology, Faculty of Materials Engineering and Metallurgy, Department of Industrial Informatics, ul. Krasińskiego 8, 40-019 Katowice, Poland

Bibliografia

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• [18] Drenchev L., Sobczak J., Malinov S., Sha W., Numerical simulation of macrostructure formation in centrifugal casting of particle reinforced metal matrix composites. Part 1: model description, Modelling Simul. Mater. Sci. Eng. 2013, 11, 635-649.
• [19] Feller R.J., Beckermann C., Modeling of solidification of metal-matrix particulate composites with convection, Metall. Mater. Trans. B 1997, 28(6), 1165-1183.
• [20] Golak S., Kachel A., Modelling dynamics of composite suspension during casting in electromagnetic field, Magnetohydrodynamics 2016, 52(4), 471-480.
• [21] Gidaspow D., Bezburuah R., Ding J., Hydrodynamics of circulating fluidized beds, kinetic theory approach, In Fluidization VII, Proceedings of the 7th Engineering Foundation Conference on Fluidization 1992, 75-82.

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017).