Thermodynamic assessment of the Cu-Ni-Pb system

Wang, Cui Ping; Liu, Xing Jun; Ohnuma, Ikuo; Kainuma, Ryosuke; Ishida, K.

doi:10.1016/s0364-5916(00)00020-1

Cited by 37 publications

(40 citation statements)

References 21 publications

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“…6, the Gibbs excess free energies of various binary alloys are given. [56][57][58][59][60][61][62] It is found that liquid Sn-Ag and Sn-Cu have negative values.…”

Section: Thermodynamic Calculationsmentioning

confidence: 99%

Surface Tension and its Temperature Coefficient of Liquid Sn-X (X=Ag, Cu) Alloys

2004

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The surface tension of liquid Sn-X (X=Ag, Cu) alloys was measured by the constrained drop method in the temperatures between 700 and 1500 K across whole composition range. Surface tension of the alloys increased with the content of Ag and Cu, and the temperature coefficient of the surface tension (d'=dT) had both positive and negative values. Experimental results were compared with the calculated results based on Butler's model. The calculated results reasonably accorded with the measurements. The effect of thermo-physical parameters on the surface tension and the temperature coefficient were examined using the model. It was found that the temperature coefficient increases as the difference in the surface tension of component metals or the excess free energy increases in the high composition range of the component metal having higher surface tension, because of the surface enhancement of the other component metal.

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“…6, the Gibbs excess free energies of various binary alloys are given. [56][57][58][59][60][61][62] It is found that liquid Sn-Ag and Sn-Cu have negative values.…”

Section: Thermodynamic Calculationsmentioning

confidence: 99%

Surface Tension and its Temperature Coefficient of Liquid Sn-X (X=Ag, Cu) Alloys

2004

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“…[17,18,19] At first, the effects of alloying elements on the stability of the miscibility gap in the liquid phase were examined. Figure 7(a) shows the calculated metastable and stable miscibility gaps of the liquid phase in the (Fe-4X wt pct)-(Cu-4X wt pct), (X: Al, C, Cr, Co, Mn, Mo, Nb, Ni, Si, V) quasi-binary system.…”

Section: A Effect Of Liquid Miscibility Gapmentioning

confidence: 99%

Formation of core-type macroscopic morphologies in Cu-Fe base alloys with liquid miscibility gap

Wang

Liu

Kainuma

et al. 2004

Metall Mater Trans A

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The effects of alloying elements on the macroscopic morphologies in Cu-Fe base alloys were experimentally investigated. It was found that macroscopic homogeneity can be achieved by the addition of Mn, Ni, Al, or Co in the Cu-Fe base alloys, while the core-type macroscopic morphologies with Cu-rich or Fe-rich cores, which are radially separated as two layers in the inner and outer parts of the ingot solidified in the cast-iron mold, were formed by the addition of C, Cr, Mo, Nb, Si, or V. It is shown that the formation of the core-type macroscopic morphology is strongly connected with the existence of a stable miscibility gap of the liquid phase in the Cu-Fe base alloy due to the addition of alloying elements. The liquid phase with less volume fraction always forms the center part. This result can be explained by a mechanism that the minor droplets as the second phase are forced to move into the thermal center due to Marangoni motion, which is caused by the temperature dependence of interfacial energy between two liquid phases.

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“…Since the time of the first investigations of this binary system carried out by Heycock and Neville [14], and Friedrich and Waehlert [15], several thermodynamic assessments were completed and the results of calculations for the most part of this system are in good agreement [16][17][18][19][20] with one another.…”

Section: Cu-pb Binary Systemmentioning

confidence: 99%

“…Also, the extend of this gap seems to be smaller. Additionally, the miscibility data of Khairoulin and Stankus [22] used in the last two assessments of Cu-Pb system by Wang et al [19], and by Vaajamo and Taskinen [46] yielded unwanted discrepancy with the experimental data of enthalpy of mixing in copper rich liquid solutions. Fig.…”

Section: Cu-pb Binary Systemmentioning

confidence: 99%

Thermodynamic Properties and Phase Equilibria in the Ternary Cu-Pb-Fe System

Onderka¹,

Jendrzejczyk-Handzlik²,

Fitzner³

2013

Archives of Metallurgy and Materials

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Using experimental data available in the literature, two binary systems, namely Cu-Pb and Fe-Pb were recalculated. Next, accepting Cu-Fe phase diagram assessment as given by Ansara and Jansson, the ternary Cu-Fe-Pb system was analyzed. Calculated equilibrium lines and thermodynamic functions are compared with existing experimental data. Good agreement was found between the calculated diagram and the experimental results. Having the system optimized, functional dependences of the logarithms of the activity coefficients on temperature and concentrations for Cu, Fe and Pb in the liquid solution are given.Keywords: Thermodynamic properties, phase equilibria, Cu-Fe-Pb system, phase diagram assessment Dwa układy podwójne Cu-Pb oraz Fe-Pb zostały powtórnie zoptymalizowane używając danych eksperymentalnych dostęp-nych w literaturze. Następnie, akceptując optymalizację układu Cu-Fe opublikowaną przez Ansarę i Janssona, poddano analizie trójskładnikowy układ Cu-Pb-Fe. Obliczone linie równowagi faz oraz funkcje termodynamiczne zostały porównane z dostęp-nymi danymi eksperymentalnymi. Uzyskano dobrą zgodność pomiędzy policzonym układem a danymi eksperymentalnymi. Korzystając z wyników optymalizacji, zostały podane zależności logarytmu współczynnika aktywności w funkcji temperatury oraz Cu, Fe i Pb w funkcji stężenia dla w roztworze ciekłym.

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Thermodynamic assessment of the Cu-Ni-Pb system

Cited by 37 publications

References 21 publications

Surface Tension and its Temperature Coefficient of Liquid Sn-X (X=Ag, Cu) Alloys

Surface Tension and its Temperature Coefficient of Liquid Sn-X (X=Ag, Cu) Alloys

Formation of core-type macroscopic morphologies in Cu-Fe base alloys with liquid miscibility gap

Thermodynamic Properties and Phase Equilibria in the Ternary Cu-Pb-Fe System

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