Abstract
Within the frame of the joint ESA research program “SETA” (Solidification along a Eutectic path in Ternary Alloys) univariant solidification is investigated in preparation of experiments onboard the ISS. The ternary eutectic alloys under examination belong to the ternary system Al-Cu-Ag. The focus is on coupled eutectic growth of two solid phases along the univariant eutectic groove (marked (1) in fig. 1 and 2) that extends from the binary Al-Cu eutectic towards the ternary nonvariant eutectic with increasing Ag content. This presentation reports on three different approaches to the topic: by means of thermodynamics, experiments and microstructure simulations and their interaction. Experiments and simulations are compared regarding planar and cellular microstructure formation and phase compositions. Thermodynamic data and calculations serve as interpretational link between experiment and simulation and as main input to the simulations.
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References
Diepers, H. J., Steinbach, I.: Interaction of Interdendritic Convection and Dendritic Primary Spacing: Phase-Field Simulation and Analytical Modeling, to be published in proceedings of International Conference on Solidification and Gravity, Miskolc, Hungary, September 2004
De Wilde, J., Froyen, L.: Solutal configuration during coupled two-phase [α(Al) + θ-Al2Cu] planar univariant eutectic growth in Al-Cu-(Ag, Si) ternary eutectic alloys, accepted for the proceedings of ISPS 2004
Witusiewicz, V. T., Hecht, U., Fries, S.G., Rex, S.: The Ag-Al-Cu system: H. Thermodynamic evaluation of the entire system, J. Alloy. Compd. (accepted)
Rex, S., Hecht, U., Drevermann, A.: Experimental performance within the SCA prototype test 1 using ESA’s Solidification and Quench Furnace (MSL-SQF) on ground, to be published in proceedings of International Conference on Solidification and Gravity, Miskolc, Hungary, September 2004
Sounders, N., Miodownik, A.: CALPHAD, Calculation of Phase Diagrams, A Comprehensive Guide, Elsevier S. Ltd. (1998).
Witusiewicz, V.T., Hecht, U., Fries, S.G., Rex, S.: The Ag-Al-Cu system: I. Reassessment of the constituent binaries, J. Alloy. Compd. (accepted)
Steinbach, I., Pezzotta, F., Nestler, B., Seeβelberg, M., Prieler, R., Schmitz, G. J., Rezende, J. L. L.: A Phase Field Concept for Multiphase Systems, Physica D, vol. 94, p. 135 (1996).
Tiaden, J., Nestler, B., Diepers, H.-J., Steinbach, I.: The multiphase-field model with an integrated concept for modelling solute diffusion, Physica D, vol. 115, p. 73(1998).
Böttger, B., Steinbach, I., Fries, S.G., Chen, Q., Sundman, B.: Alloy design for ultra-high temperature steamturbine applications: phase-field simulation of the remelting process in Materials for Advanced Power Engineering 2002, Liege, Belgium, ed. by Lecomte-Beckers, J. (et al.), Jülich: Forschungs-zentrum Jülich, part III, p. 1333 (2002).
Hecht, U., Witusiewicz, V.T., Drevermann, A., Rex, S.: Formation of eutectic cells in ternary Al-Cu-Ag alloys, Adv. Eng. Mater. (accepted)
unpublished experimental results
Rinaldi, M. D., Sharp, R.M., Flemings, M.C.: Growth of ternary composites from melt.2., Metall.Trans., vol. 3, p. 3139 (1972).
Plapp, M. andKarma, A.: Eutectic colony formation: A stability analysis. Phys. Rev. E, vol. 60, p. 6865 (1999).
Rios, C.T., Milenkovic, S., Caram, R.: Directional growth of Al-Nb-X eutectic alloys. J. Cryst.Growth, vol. 211, p. 466 (2000).
Rios, C.T., Milenkovic, S., Gama, S., Caram, R.: Influence of the growth rate on the microstructure of a Nb-Al-Ni ternary eutectic. J. Crystal Growth, vol. 237–239, p. 90 (2002).
Garmong, G.: The directional solidification of Al-Cu-Mg monovariant alloys. Metall. Trans., vol. 2, p. 2025 (1971).
Sayir, A., Framer, S.C.: The effect of the microstructure on mechanical properties of directionally solidified A12O3 / ZrO2(Y2O3) eutectic, Acta mater., vol. 48, p. 4691 (2000).
Akamatsu, S., Faivre, G.: Traveling waves, two-phase fingers and eutectic colonies in thin-sample directional solidification of a ternary eutectic alloy, Phys. Rev. E, vol. 61, p. 3757 (2000).
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Drevermann, A., Hecht, U., Witusiewicz, V. et al. Univariant Eutetic growth in ternary Al-Cu-Ag-alloys. Microgravity sci. Technol. 16, 45–49 (2005). https://doi.org/10.1007/BF02945944
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DOI: https://doi.org/10.1007/BF02945944