Interfacial tension, wetting and nucleation in Al–Bi and Al–Pb monotectic alloys

Microstructure of the Al 91Pb 9 (wt.%) alloy is improved by addition of TiB 2 particles that stimulate nucleation of the minority phase (Pb) droplets. Reduction in the nucleation barrier for the droplets results in a significant increase in the number of Pb-rich particles, and in a decrease of their...

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