Abstract
The mechanism of liquid–liquid phase separation and factors determining the solid-state microstructure of monotectic alloys are discussed. The effect of the cooling rate on the phase-separated morphology is shown in examples of Al–In, Al–Pb, Ni–Nb–Y and Zr–Gd–Co–Al alloys solidified by different techniques. A remarkable improvement of the microstructure for the Al91Pb9 hypermonotectic alloy cast with TiB2 particles, which catalyze the phase separation, is demonstrated.
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Acknowledgements
This study has partly been funded by the German Research Foundation DFG (Contracts No. Ka-3209/1-2, Ra-537/10). The Foundry Research Institute Cracow and the Global Research Laboratory Program of the Korean Ministry of Education, Science and Technology are acknowledged for the support of this study. O. Shuleshova is acknowledged for helpful discussions. B. Korpała, G. Bruzda and A. Tchorz are thanked for technical assistance.
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Kaban, I., Köhler, M., Ratke, L. et al. Phase separation in monotectic alloys as a route for liquid state fabrication of composite materials. J Mater Sci 47, 8360–8366 (2012). https://doi.org/10.1007/s10853-012-6660-3
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DOI: https://doi.org/10.1007/s10853-012-6660-3