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 Al 91Pb 9 hypermonotectic alloy cast with TiB 2 particles, which catalyze the phase separation, is demonstrated.
Bibliographical noteFunding Information:
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.
All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Mechanical Engineering