Modeling of the dendrite arms behavior during solidification

• Autorzy: Burbelko A. A. , Kapturkiewicz W. , Gurgul D. , Stręk P.
• Języki publikacji: EN

Abstrakty

EN

Modelling was carried out to investigate the internal dendrite grains structure formation from a liquid two-component solution. For the simulation, our own model and computer program based on CAFD (Cellular Automata - Finite Differences) were used. In modelling, the effect of process conditions and material-related parameters on the nature of the dendritic grain growth was examined. It was demonstrated that increase of the secondary dendrite arm space may by a result of interruption of the arms growth as well as of overgrowing of concave regions. A local melting down of the grains of a solid phase due to the segregation of admixtures reducing the alloy point of liquidus is also possible.

Słowa kluczowe

EN

cellular automation; secondary dendrite arm space; remelting

PL

automat komórkowy; przetapianie; krzepnięcie

• Wydawca: Komisja Odlewnictwa Polskiej Akademii Nauk Oddział w Katowicach
• Czasopismo: Archives of Foundry Engineering
• Rocznik: 2009
• Tom: Vol. 9, iss. 4
• Strony: 13--16
• Opis fizyczny: Bibliogr. 12 poz., rys., wykr.

Twórcy

autor

Burbelko A. A.

autor

Kapturkiewicz W.

autor

Gurgul D.

autor

Stręk P.

• Faculty of Foundry Engineering, AGH University of Science and Technology, Reymonta 23, 30-059 Krakow, Poland,

Bibliografia

• [1] A. R. Umantsev, V. V. Vinogradov, and V. T. Borisov: Kristallografia Vol. 30 (3) (1985), p. 455 (In Russian).
• [2] A. R. Umantsev, V. V. Vinogradov, and V. T. Borisov: Kristallografia Vol. 31 (5) (1986), p. 1002 (In Russian).
• [3] M. F. Zhu, C. P. Hong, D. M. Stefanescu, Y. A. Chang: Metall. Mater. Trans. B Vol. 38B (2007), p. 517.
• [4] M.-F. Zhu, W. Cao, S.-L. Chen, C.-P. Hong, Y. A. Chang: Journal of Phase Equilibria and Diffusion Vol. 28 (1) (2007), p. 130.
• [5] A. Burbelko: Mezomodeling of Solidification Using a Cellular Automaton (UWND, Poland, Krakow 2004) (In Polish).
• [6] A. Burbelko, W. Kapturkiewicz, D. Gurgul, in: Solidification Processing 2007: Proceedings of the 5th Decennial International Conference on Solidification Processing. The University of Sheffield, UK, (2007) p. 31.
• [7] A. Burbelko, E. Fraś, W. Kapturkiewicz and E. Olejnik: Mater. Sci. Forum, Vol. 508 (2006), p. 405.
• [8] W. Wang, A. Kermanpur, P. D. Lee and McLean: Int. J. Cast Metals Res. Vol. 15 (2002) p. 269.
• [9] L. Beltran-Sanchez and D. M. Stefanescu: Metall. Mater. Trans. A Vol. 34A (2003) p. 367.
• [10] L. Beltran-Sanchez and D. M. Stefanescu: Metall. Mater. Trans. A Vol. 35A (2004) p. 2471.
• [11] A. Burbelko, W. Kapturkiewicz, D. Gurgul: Computer Methods in Materials Science Vol. 7 (1) (2007) p. 182.
• [12] U. Dithley, V. Pavlik, in: Modeling of Casting, Welding and Advanced Solidification Processes VIII, edited by B. G. Thomas and C. Beckermann, TMS, Warrendale (1998) p. 589.