The liquid metastable miscibility gap in Cu-based systems

S. Curiotto, R. Greco, Nini Pryds, Erik Johnson, L. Battezzati

    Research output: Contribution to journalConference articleResearchpeer-review

    Abstract

    Some Cu-based alloys, like Cu–Co, Cu–Fe and Cu–Co–Fe, display a liquid metastable miscibility gap. When the melt is undercooled below a certain temperature depending on the alloy composition, they present a separation in two liquid phases, followed by coagulation before dendritic solidification. In order to predict the phase equilibria and the mechanisms of microstructure formation, a determination of the metastable monotectics in the phase diagrams is essential. This paper focuses on the up-to-date findings on the Cu–Co, Cu–Fe and Cu–Co–Fe metastable miscibility gap in the liquid phase. Furthermore, the knowledge on the phase equilibria in the three systems is extended by presenting new results obtained by differential scanning calorimetry (DSC) and comparing them with the calculated phase diagrams.
    Original languageEnglish
    JournalFluid Phase Equilibria
    Volume256
    Pages (from-to)132-136
    ISSN0378-3812
    DOIs
    Publication statusPublished - 2007
    Event16th Symposium on Thermophysical Properties/19th International Conference on Chemical Thermodynamics/61st Calorimetry Conference - Boulder, Colorado, United States
    Duration: 30 Jun 20064 Aug 2006
    Conference number: 16, 19, 61
    http://thermosymposium.nist.gov/archive/symp16/announce8.html

    Conference

    Conference16th Symposium on Thermophysical Properties/19th International Conference on Chemical Thermodynamics/61st Calorimetry Conference
    Number16, 19, 61
    CountryUnited States
    CityBoulder, Colorado
    Period30/06/200604/08/2006
    Internet address

    Keywords

    • Cu alloys
    • Metastable miscibility gap
    • Differential scanning calorimetry (DSC)

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