The influence of micro-scale solute diffusion and dendrite coarsening upon surface macrosegregation

International Journal of Heat and Mass Transfer

Volumn 40, Issue 9, 1997, Pages 2055-2065

  Thevik, Håvard J ^a   Mo, Asbjørn ^a  

^a SINTEF   (Norway)

Author keywords

[No Author keywords available]

Indexed keywords

ALUMINUM CASTINGS; DIFFUSION IN SOLIDS; MATHEMATICAL MODELS; METALLOGRAPHIC MICROSTRUCTURE; SOLIDIFICATION; SURFACE STRUCTURE;

DENDRITE COARSENING; MICRO SCALE SOLUTE DIFFUSION; SURFACE MACROSEGREGATION;

SEGREGATION (METALLOGRAPHY);

EID: 0031165984     PISSN: 00179310     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0017-9310(96)00276-1     Document Type: Article

References (35)

1. Mo, A., Johnsen, T. E., Henriksen, B. R., Jensen, E. K. and Myhr, O. R., Modelling the surface segregation development in DC casting. In Light Metals, ed. U. Mannweiler. Warrendale, PA, 1994, TMS-AIME, pp. 889-896.
2. Emley, E. F., Continuous casting of aluminium. International Metals Reviews, 1976, pp. 75-115.
3. Buxmann, K., Mechanismen der Oberflächenseigrung von Strangguß. Metallurgica, 1977, 31(2), 163-170.
4. Ohm, L. and Engler, S., Treibende Kräfte der Oberflächenseigrungen beim NE-Stranguß. Metallurgica, 1989, 43(6), 520-524.
5. Mo, A., Mathematical modelling of surface segregation in aluminium DC casting caused by exudation. International Journal of Heat and Mass Transfer, 1993, 36(18), 4335-4340.
6. Henriksen, B. R. and Jensen, E. K., Modelling the effect of casting speed and metal level on the surface segregation of AA5182. In Light Metals. Warrendale, PA, 1993, TMS-AIME.
7. Flemings, M. C. and Nereo, G. E., Macrosegregation, Part I. Transactions of Metallurgical Society of AIME, 1967, 239, 1449-1461.
8. Minakawa, S., Samarasekera, I. V. and Weinberg, F., Inverse segregation. Metallurgical Transactions, 1985, 16B, 595-604.
9. Diao, Q. Z. and Tsai, H. L., Modelling of solute redistribution in the mushy zone during solidification of aluminium-copper alloys. Metallurgical Transactions, 1993, 24A, 963-973.
10. Chen, J. H. and Tsai, H. L., Inverse segregation for a unidirectional solidification of aluminium-copper alloys. International Journal of Heat Mass Transfer, 1993, 36(12), 3069-3075.
11. Haug, E., Mo, A. and Thevik, H. J., Macrosegregation near a cast surface caused by exudation and solidification shrinkage. International Journal of Heat and Mass Transfer, 1995, 38(9), 1553-1563.
12. Sundarraj, S. and Voller, V. R., A dual scale model of segregation phenomena. ASME Transport Phenomena in Solidification, 1994, HTD-284, 29-42.
13. Voller, V. R. and Sundarraj, S., A model of inverse segregation: the role of microporosity. International Journal of Heat and Mass Transfer, 1995, 38(6), 1009-1018.
14. Schneider, M. C. and Beckermann, C., A numerical study of the combined effects of microsegregation, mushy zone permeability and flow, caused by volume contraction and thermosolutal convection, on macrosegregation and eutectic formation in binary alloy solidification. International Journal of Heat and Mass Transfer, 1995, 38(18), 3455-3473.
15. Glicksman, M. E., Smith, R. N., Marsh, S. P. and Kuklinski, R., Mushy zone modelling with microstructural coarsening kinetics. Metallurgical Transactions, 1992, 23A, 659-667.
16. Ni, J. and Beckermann, C., A volume-averaged two-phase model for transport phenomena during solidification. Metallurgical Transactions, 1991, 22B, 349-361.
17. Combeau, H., Drezet, J.-M., Mo, A. and Rappaz, M., Modelling of microsegregation in macrosegregation computations. Metallurgical and Materials Transactions A, 1996, 27A, 2314-2327.
18. Mortensen, A., On the rate of dendrite arm coarsening. Metallurgical Transactions, 1991, 22A, 569-574.
19. Kattamis, T. Z., Coughlin, J. C. and Flemings, M. C., Influence of coarsening on dendrite arm spacing of aluminium-copper alloys. Transactions of the Metallurgical Society of AIME, 1967, 239, 1504-1511.
20. Wilson, P. W., Kattamis, T. Z. and Shiohara, Y., Coarsening during solidification of aluminium-copper alloys. Journal of Material Science, 1988, 23(18), 2882-2892.
21. Thevik, H. J. and Mo, A., The effect of coarsening upon macrosegregation close to a cast surface. In Modeling of Casting, Welding and Advanced Solidification Processes VII, eds M. Cross and J. Campbell. Warrendale, PA, 1995, TMS, pp. 557-564.
22. Thevik, H. J., Mathematical modelling of macrosegregation formation close to a cast surface. PhD thesis, University of Oslo, Norway, 1996.
23. MATLAB User's Guide. The MathWorks, Inc., Natick, MA 01760, 1992.
24. Kato, H. and Cahoon, J. R., Inverse segregation in directionally solidified Al-Cu-Ti alloys with equiaxed grains. Metallurgical Transactions, 1985, 16A, 579-587.
25. Ganesan, S. and Poirier, D. R., Densities of aluminum-rich aluminum-copper alloys during solidification. Metallurgical Transactions, 1987, 18A, 721-723.
26. Voller, V. R., Department of Civil Engineering, University of Minnesota, MI. Private communication, 1995.
27. Sundarraj, S. and Voller, V. R., Effects of microscale phenomena and density in modelling macrosegregation. In Modeling of Casting, Welding and Advanced Solidification Process VII, eds M. Cross and J. Campbell. Warrendale, PA, 1995, TMS, pp. 131-138.
28. Jensen, E. K., Mathematical model calculations in level pour DC-casting of aluminium extrusion ingots. In Light Metals, ed. K. J. McMinn. Warrendale, PA, 1980, TMS-AIME, pp. 631-642.
29. Rappaz, M. and Voller, V., Modelling of micro-macrosegregation in solidification processes. Metallurgical Transactions, 1990, 21A, 749-753.
30. Poirier, D. R., Nandapurkar, P. J. and Ganesan, S., The energy and solute conservation equations for dendritic solidification. Metallurgical Transactions, 1991, 22B, 899-900.
31. Pehlke, R. D., Jeyarajan, A. and Wada, H., Summary of thermal properties for casting alloys and mold materials. Technical report PB83-211003, National Technical Information Service, 1983.
32. Murphy, J. B., Interdiffusion in dilute aluminium-copper solid solutions. Acta Metallurgica, 1961, 9, 563-569.
33. Dean, N. F., Mortensen, A. and Flemings, M. C., Microsegregation in cellular solidification. Metallurgical and Materials Transactions, 1994, 25A, 2295-2301.
34. Massalski, T. B. (ed.), Binary Alloy Phase Diagrams, Vol. 1, ASM International, 2nd edn, 1990.
35. Gündüz, M. and Hunt, J. D., Acta Metallurgica, 1985, 33, 1651-1672.