Prediction of useful casting structure applying Cellular Automaton method

• Autorzy: Ignaszak Z. , Hajkowski J. , Hajkowski M.
• Języki publikacji: EN

Abstrakty

EN

The results of simulation investigations of primary casting's structure made of hypoeutectic Al-Si alloy using the Calcosoft system with CAFE 3D (Cellular Automaton Finite Element) module are presented. CAFE 3-D module let to predict the structure formation of complete castings indicating the spatial distribution of columnar and equiaxed grains. That simplified model concerns only hypoeutectic phase. Simulation investigations of structure concern the useful casting of camshaft which solidified in high-insulation mould with properly chills distribution. These conditions let to apply the expedient locally different simplified the grains blocs geometry which are called by the authors as pseudo-crystals. The mechanical properties in selected cross-sections of casing are estimated.

Słowa kluczowe

EN

structure modelling; solidification; cellular automation; AlSi alloy

PL

modelowanie struktury; krzepnięcie; automat komórkowy; stop Al-Si

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 3
• Strony: 61--66
• Opis fizyczny: Bibliogr. 16 poz., rys., tab.

Twórcy

autor

Ignaszak Z.

autor

Hajkowski J.

autor

Hajkowski M.

• Foundry and CAD/CAE Laboratories of Materials Technology, Poznan University of Technology, 3 Piotrowostreet, 60-965 Poznań, Poland,

Bibliografia

• [1] Z. Ignaszak, P. Mikołajczak, P. Popielarski, Specifity and on-line validation method examples needed by systems forecasting the quality of industrial castings (in Polish). Report no PBZ-KBN-114/T08/2004. Poznań 2009.
• [2] Z. Ignaszak, P. Mikołajczak, Study on the empirical preprocessing parameters instance the ductile iron casting soli-dification and feeding. Monograph "Modern materials and technology processes in foundry", part 1, (in Polish). Foundry Institut (Instytut Odlewnictwa), Kraków 2008, pp. 250-262.
• [3] K. Weiß, Ch. Honsel, A. Wendt, Modellierung der Erstar-rung, Eigenschaften und Funktionalität von Leichtgewichts-Strukturbauteile (Modelling of solidification, properties and functionality of structural light weight castings), WFO Technical Forum, June 12-14 2007, Düsseldorf, Germany.
• [4] W. Kurz, D. J. Fisher, Fundamentals of solidification, Trans. Tech. Publ. 3rd Edition, Aedermanndorf Switzerland 1992.
• [5] W. Kurz, B.Giovanola, R. Trivedi, Theory of Microstructur-al Development During Rapid Solidification, Acta Metall. 34 (5) 1986: pp. 823 - 830.
• [6] Ch.-A.Gandin, Ch. Charbon, M. Rappaz, Stochastic Modelling of Solidification Grain Stucture, ISIJ International 6 1995, pp. 651 - 657.
• [7] Ch.-A.Gandin, J.-L.Desbiolles, M. Rappaz, Ph. Thevoz, A Three-Dimensional Cellular Automaton-Finite Element Model for the Prediction of Solidification Grain Structures, Metallurgical and Materials Transactions A vol.30A 1999, pp. 3153 - 3165.
• [8] Ch.-A. Gandin, M. Rappaz, A Couplet Finite Element - Cellular Automaton Model for the Prediction of Dendritic Grain Structure in Solidification Processes, Acta Metall. 40(7) 1994, pp. 2233 - 2246.
• [9] Ch.-A. Gandin, Stochastic Modeling of Dendritic Grain Structures, Advanced Engineering Materials, 2001, No.3, pp.303 - 306.
• [10] Ph. Thevoz, J. L. Desbiolles, M. Rappaz, Modeling of Equiaxed Microstructure Formation in Castings, Metallurgical and Materials Transactions A vol. 20A 1989, p.311 - 316.
• [11] Z. Ignaszak, J. Hajkowski, Prediction of CET-zone position using the Cellular Automaton-Finite Element method for Al-Si alloys castings, The Fifth International Conference on Mathematical Modeling and Computer Simulations of Materials Technologies (MMT-2008), September 8-12 2008, Ariel, Israel.
• [12] J. Hajkowski, Z. Ignaszak, Validation Problems of Cellular Automaton Finite Element Simulation Results for Solidifying Cylindrical Al-Si Casting, 3rd International VIDA Conference Poznań, 28-29 June 2007.
• [13] Z. Ignaszak, M. Hajkowski, J. Hajkowski, P. Popielarski, The problems of testing and validation of the Cellular Automaton-Finite Element method applied to forecasting a microstructure of hypoeutectic Al-Si alloys, Archives of Foundry, vol. 5 no 15,Gliwice 2005.
• [14] Z. Ignaszak, J. Hajkowski, Identification of Mould Influence on Columnar-to-Equiaxial Transition Zone Position in Al-Si Alloys Castings, Archives of Foundry Engineering, vol. 8/3 s.127-133, Gliwice 2008.
• [15] J.Hajkowski, Modeling and simulation of Al-Si alloys castings microstructure formation with the use of cellular automaton, PhD Thesis, 15.12.2008 (promotor: Z.Ignaszak) (in Polish).
• [16] M.Hajkowski, Forecasting of mechanical properties of the casting made of hypoeutectic silumins on the basis of thermal processes and structural parameters, Monograph, Publishing House of Poznan University of Technology, Poznań 2003 (in Polish).