New insights into flow structure in the DC casting of aluminum alloys

TMS Light Metals

Volumn , Issue , 2005, Pages 1031-1036

  Založnik, Miha ^a   Šarler, Božidar ^b  

^a Impol dd   (Slovenia)

^b UNIVERSITY OF NOVA GORICA   (Slovenia)

Author keywords

Direct Chill Casting; Macrosegregation; Melt Flow; Numerical Modeling; Solidification

Indexed keywords

DIRECT CHILL (DC) CASTING; FLOW STRUCTURE; MACROSEGREGATION; MELT FLOW;

ALUMINUM ALLOYS; COMPUTER SIMULATION; FINITE VOLUME METHOD; MATHEMATICAL MODELS; NATURAL CONVECTION; SOLIDIFICATION;

ALUMINUM CASTINGS;

EID: 23244434044     PISSN: 01470809     EISSN: None     Source Type: Conference Proceeding    
DOI: None     Document Type: Conference Paper

References (16)

1. T. L. Finn, M. G. Chu, and W. D. Bennon, "The influence of mushy region microstructure on macrosegregation in direct chill cast aluminum-copper round ingots," Micro/Macro Scale Phenomena in Solidification, ed. C. Beckermann, L. A. Bertram, S. J. Pien, and R. E. Smelser (New York: ASME, 1992), 17-24.
2. C. J. Vreeman, M. J. M. Krane, and J. D. Schloz, "Direct chill casting of aluminum alloys: Modeling and experiments on industrial scale ingots," J. Heat Transf., 124 (2002), 947-953.
3. P. A. Davidson and S. C. Flood, "Natural convection in an aluminum ingot: A mathematical model," Metall. Mater. Trans. B, 25B (1994), 293-302.
4. J. M. Reese, "Characterization of the flow in the molten metal sump during direct chill aluminum casting," Metall. Mater. Trans. B, 28B (1997), 491-499.
5. D. Mortensen, "A mathematical model of the heat and fluid flows in direct-chill casting of aluminum sheet ingots and billets," Metall. Mater. Trans. B, 30B (1999), 119-133.
6. G.-U. Grün, A. Buchholz, and D. Mortensen, "3-D modeling of fluid flow and heat transfer during the DC casting process - influence of flow modeling approach," Light Metals 2000, ed. Ray D. Peterson (Warrendale, PA: TMS, 2000), 573-578.
7. A. J. Williams, T. N. Croft, and M. Cross, "Modeling of ingot development during the start-up phase of direct chill casting," Metall. Mater. Trans. B, 34B (2003), 727-734.
8. S. C. Flood, L. Katgerman, and V. R. Voller, "The calculation of macrosegregation and heat and fluid flows in the DC casting of aluminum alloys," Modeling of Casting, Welding and Advanced Solidification Processes V, ed. M. Rappaz, M. R. Ozgu, and K. W. Mahin (Warrendale, PA: TMS, 1991), 683-690.
9. A. V. Reddy and C. Beckermann, "Modeling of macrosegregation due to thermosolutal convection and contraction driven flow in direct chill continuous casting of an Al-Cu round ingot," Metall. Mater. Trans. B, 28B (1997), 479-489.
10. T. Jalanti et al., "Modelling of macrosegregation in continuous casting of aluminium" (Paper presented at the DGM Continuous Casting 2000 conference, Frankfurt, Germany, 13-15 November 2000).
11. C. J. Vreeman and F. P. Incropera, "The effect of free-floating dendrites and convection on macrosegregation in direct chill cast aluminum alloys, part II: Predictions for Al-Cu and Al-Mg alloys," Int. J. Heat Mass Transf., 43 (2000), 687-704.
12. B. C. H. Venneker and L. Katgerman, "Modelling issues in macrosegregation predictions in direct chill castings," Journal of Light Metals, 2 (2002), 149-159.
13. C. Beckermann, "Modeling of macrosegregation: Applications and future needs," Int. Mater. Rev., 47 (2002), 243-261.
14. M. Založnik and B. Šarler, "Melt flow and macrosegregation in DC casting of binary aluminum alloys," Materials Science Forum, 2005, submitted.
15. W. D. Bennon and F. P. Incropera, "A continuum model for momentum, heat and species transport in binary solid-liquid phase change systems - I. model formulation," Int. J. Heat Mass Transf., 30 (1987), 2161-2170.
16. B. P. Leonard and S. Mokhtari, "Beyond 1st-order upwinding - the ULTRA-SHARP alternative for nonoscillatory steady-state simulation of convection," Int. J. Numer. Meth. Eng., 30 (1990), 729-766.