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Scheil–Gulliver Constituent Diagrams

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Abstract

During solidification of alloys, conditions often approach those of Scheil–Gulliver cooling in which it is assumed that solid phases, once precipitated, remain unchanged. That is, they no longer react with the liquid or with each other. In the case of equilibrium solidification, equilibrium phase diagrams provide a valuable means of visualizing the effects of composition changes upon the final microstructure. In the present study, we propose for the first time the concept of Scheil–Gulliver constituent diagrams which play the same role as that in the case of Scheil–Gulliver cooling. It is shown how these diagrams can be calculated and plotted by the currently available thermodynamic database computing systems that combine Gibbs energy minimization software with large databases of optimized thermodynamic properties of solutions and compounds. Examples calculated using the FactSage system are presented for the Al-Li and Al-Mg-Zn systems, and for the Au-Bi-Sb-Pb system and its binary and ternary subsystems.

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Correspondence to Arthur D. Pelton.

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Manuscript submitted September 9, 2016.

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Pelton, A.D., Eriksson, G. & Bale, C.W. Scheil–Gulliver Constituent Diagrams. Metall Mater Trans A 48, 3113–3129 (2017). https://doi.org/10.1007/s11661-017-4059-0

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  • DOI: https://doi.org/10.1007/s11661-017-4059-0

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