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Effect of partition coefficient on microsegregation during solidification of aluminium alloys

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Abstract

In the modeling of microsegregation, the partition coefficient is usually calculated using data from the equilibrium phase diagrams. The aim of this study was to experimentally and theoretically analyze the partition coefficient in binary aluminum-copper alloys. The samples were analyzed by differential thermal analysis (DTA), which were melted and quenched from different temperatures during solidification. The mass fraction and composition of phases were measured by image processing and scanning electron microscopy (SEM) equipped with an energy-dispersive X-ray spectroscopy (EDS) unit. These data were used to calculate as the experimental partition coefficients with four different methods. The experimental and equilibrium partition coefficients were used to model the concentration profile in the primary phase. The modeling results show that the profiles calculated by the experimental partition coefficients are more consistent with the experimental profiles, compared to those calculated using the equilibrium partition coefficients.

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References

  1. D. H. Kirkwood, Microsegregation, Mater. Sci. Eng. A, 65(1984), No. 1, p. 101.

    Article  Google Scholar 

  2. I. Ohnaka, Mathematical analysis of solute redistribution during solidification with diffusion in solid phase, Trans. ISIJ, 26(1986), No. 26, p. 1045.

    Article  Google Scholar 

  3. S. Kobayashi, Solute redistribution during solidification with diffusion in solid phase: a theoretical analysis, J. Cryst. Growth, 88(1988), No. 1, p. 87.

    Article  Google Scholar 

  4. T. Kraft, M. Rettenmayr, and H.E. Exner, An extended numerical procedure for predicting microstructure and microsegregation of multicomponent alloys, Modell. Simul. Mater. Sci. Eng., 4(1996), No. 2, p. 161.

    Article  Google Scholar 

  5. X. Doré, H. Combeau, and M. Rappaz, Modelling of microsegregation in ternary alloys: application to the solidification of Al-Mg-Si, Acta Mater., 48(2000), No. 15, p. 3951.

    Article  Google Scholar 

  6. Q. Du and A. Jacot, A two-dimensional microsegregation model for the description of microstructure formation during solidification in multicomponent alloys: Formulation and behavior of the model, Acta Mater., 53(2005), No. 12, p. 3479.

    Article  Google Scholar 

  7. A. Turkeli, Approximate analytical models for microsegregation considering the effect of dendrite arm coarsening, Mater. Sci. Forum, 508(2006), p. 449.

    Article  Google Scholar 

  8. S.N. Samaras and G.N. Haidemenopoulos, Modelling of microsegregation and homogenization of 6061 extrudable Al-alloy, J. Mater. Process. Technol., 194(2007), No. 1–3, p. 63.

    Article  Google Scholar 

  9. Q. Du, D.G. Eskin, A. Jacot, and L. Katgerman, Two-dimensional modelling and experimental study on microsegregation during solidification of an Al-Cu binary alloy, Acta Mater., 55(2007), No. 5, p. 1523.

    Article  Google Scholar 

  10. G. Kasperovich, T. Volkmann, L. Ratke, and D. Herlach, Microsegregation during solidification of an Al-Cu binary alloy at largely different cooling rates (0.01 to 20,000 K/s): modeling and experimental study, Metall. Mater. Trans. A, 39(2008), No. 5, p. 1183.

    Article  Google Scholar 

  11. J. Tang and X. Xue, Numerical simulation of multi-grain structure and prediction of microsegregation in binary Ni-Cu alloy under isothermal conditions, Mater. Sci. Eng. A, 499(2009), No. 1–2, p. 64.

    Article  Google Scholar 

  12. T.P. Battle, Mathematical modelling of solute segregation in solidifying materials, Int. Mater. Rev., 37(1992), No. 6, p. 249.

    Article  Google Scholar 

  13. H. Fredriksson and U. Akerlind, Solidification and Crystallization Processing in metals and Alloys, John Wiley & Sons, Chichester, West Sussex, 2012, p. 475.

    Book  Google Scholar 

  14. F.Y. Xie, T. Kraft, Y. Zuo, C.H. Moon, and Y.A. Chang, Mi crostructure and microsegregation in Al-rich Al-Cu-Mg alloys, Acta Mater., 47(1999), No. 2, p. 489.

    Article  Google Scholar 

  15. H. Liang, T. Kraft, and Y.A. Chang, Importance of reliable phase equilibria in studying microsegregation in alloys: Al-Cu-Mg, Mater. Sci. Eng. A, 292(2000), No. 1, p. 96.

    Article  Google Scholar 

  16. X.Y. Yan, F.Y. Xie, M. Chu, and Y.A. Chang, Microsegregation in Al-4.5Cu wt.% alloy: experimental investigation and numerical modeling, Mater. Sci. Eng. A, 302(2001), No. 2, p. 268.

    Article  Google Scholar 

  17. E.C. Kurum, H.B. Dong, and J.D. Hunt, Microsegregation in Al-Cu alloys, Metall. Mater. Trans. A, 36(2005), No. 11, p. 3103.

    Article  Google Scholar 

  18. M.N. Gungor, A statistically significant experimental technique for investigating microsegregation in cast alloys, Metall. Trans. A, 20(1989), No. 11, p. 2529.

    Article  Google Scholar 

  19. J. Valdes, S.L. Shang, Z.K. Liu, P. King, and X.B. Liu, Quenching differential thermal analysis and thermodynamic calculation to determine partition coefficients of solute elements in simplified Ni-base superalloys, Metall. Mater. Trans. A, 41(2010), No. 2, p. 487.

    Article  Google Scholar 

  20. W.F. Gale and T.C. Totemeier, Smithells Metals Reference Book, Elsevier, Burlington, 2004, p. 13.

    Google Scholar 

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Authors and Affiliations

  1. Department of Metallurgy and Materials Engineering, Faculty of Engineering, Ferdowsi University of Mashhad, Azadi Square, 91775-1111, Mashhad, Iran

    M. H. Avazkonandeh-Gharavol & M. Haddad-Sabzevar

  2. Department of Materials Science and Engineering, School of Industrial Engineering and Management, Royal Institute of Technology, Brinellvägen 23, Stockholm, 100 44, Sweden

    H. Fredriksson

Authors
  1. M. H. Avazkonandeh-Gharavol
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  2. M. Haddad-Sabzevar
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  3. H. Fredriksson
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Correspondence to M. H. Avazkonandeh-Gharavol.

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Avazkonandeh-Gharavol, M.H., Haddad-Sabzevar, M. & Fredriksson, H. Effect of partition coefficient on microsegregation during solidification of aluminium alloys. Int J Miner Metall Mater 21, 980–989 (2014). https://doi.org/10.1007/s12613-014-0999-1

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  • DOI: https://doi.org/10.1007/s12613-014-0999-1

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