1998
DOI: 10.1088/0965-0393/6/2/003
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Microstructure evolution of immiscible alloys during cooling through the miscibility gap

Abstract: A numerical model is developed describing the very fast process of microstructure evolution under the common action of nucleation and diffusional growth of minority phase droplets during cooling of a hypermonotectic alloy through the miscibility gap. The model is validated comparing it with an analytical solution obtained with some simplifying assumptions and then applied to predict the microstructure evolution in Al-Pb alloy in a real casting situation. The numerical model reflects the real physical processes… Show more

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Cited by 47 publications
(22 citation statements)
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“…It may be explained as follows: The local cooling rate of the melt is given by Eq. [14] when the solidification comes into the steady state:…”
Section: Effect Of the Convections On The Microstructure Evolutionmentioning
confidence: 99%
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“…It may be explained as follows: The local cooling rate of the melt is given by Eq. [14] when the solidification comes into the steady state:…”
Section: Effect Of the Convections On The Microstructure Evolutionmentioning
confidence: 99%
“…Great attention has been paid to the study of the kinetics of the liquid-liquid phase transformation. [5][6][7][8][9][10][11][12][13][14][15][16][17][18] Rogers and Davis [5] and Ratke [6] treated the collision and coagulation statistics of the MPDs. Fredriksson and co-workers, [7] Ahlborn, [8] and Uebber [9] analyzed the microstructure evolution in Zn-Bi, Al-In, Al-Pb, and Zn-Pb, respectively.…”
Section: Introductionmentioning
confidence: 99%
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“…Assuming that the composition of the minority phase droplets varies always according to the phase diagram, the droplet growth rate derived respectively from eqs. (3) and (5) are [8] m I…”
Section: Model Theorymentioning
confidence: 99%
“…A fine dispersion of particles can be obtained by using the fast cooling technique [1][2][3][4][5][6][7] . Recently great attention has been paid to the study of the solidification of immiscible alloys [8][9][10][11][12] . But commonly the microstructure evolution during a cooling was investigated by neglecting the interaction between the minority phase droplets.…”
mentioning
confidence: 99%