Thermodynamic modelling of the Cu-Mg-Zn ternary system

P. Liang; H. J. Seifert; H. L. Lukas; G. Ghosh; G. Effenberg; F. Aldinger

doi:10.1016/S0364-5916(99)00009-7

Thermodynamic modelling of the Cu-Mg-Zn ternary system

P. Liang^*, H. J. Seifert, H. L. Lukas, G. Ghosh, G. Effenberg, F. Aldinger

^*Corresponding author for this work

Research output: Contribution to journal › Article › peer-review

40 Scopus citations

Abstract

The quasibinary MgCu₂-MgZn₂ system was optimized with the program BINGSS. All phase diagram data and thermodynamic values available in the literature were critically assessed before the optimization. Experimental investigations by EDX of ternary Cu-Mg-Zn alloys were specifically performed to provide missing data of the Cu solubilities of the Mg-Zn phases. The Laves-phases C15 (MgCu₂), C14 (MgZn₂) and C36 (τ,Mg₂CuZn₃) existing in the Cu-Mg, Mg-Zn and Cu-Mg-Zn systems were described by the "Compound-Energy-Formalism" with Cu-Zn exchange, Mg(Cu_1-xZn_x) and a weak tendency for antistructure atom formation (Cu and Zn on the Mg sublattices, Mg on the Cu-Zn sublattices). The binary intermetallic phases MgZn, Mg₂Zn₃ and Mg₂Zn₁₁ are modelled to have Cu-Zn exchange on one sublattice. The Bragg-Williams description of ordering was extended to describe the ternary range of the βCuZn phase. Estimates were made, where experimental data are not sufficient. Using the binary subsystems from the literature with small updates the Cu-Mg-Zn ternary system was calculated. In general, good agreement is obtained between calculations and experiments.

Original language	English (US)
Pages (from-to)	527-544
Number of pages	18
Journal	Calphad: Computer Coupling of Phase Diagrams and Thermochemistry
Volume	22
Issue number	4
DOIs	https://doi.org/10.1016/S0364-5916(99)00009-7
State	Published - 1998
Externally published	Yes

Funding

Financial support by the German UBundesministerium fiir Bildung, Wissenschaft, Forschung und Tech-nologie” (Contract 03K7208 0) within the framework of the European Community Project COST 507 is gratefully acknowledged. The authors would also like to thank P. Ochin (CNRS, Vitry, France) for preparation of the alloys. One of the authors (GG) would like to thank the Max-Planck-Gesellschaft for a visiting fellowship.

ASJC Scopus subject areas

General Chemistry
General Chemical Engineering
Computer Science Applications

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10.1016/S0364-5916(99)00009-7

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title = "Thermodynamic modelling of the Cu-Mg-Zn ternary system",

abstract = "The quasibinary MgCu2-MgZn2 system was optimized with the program BINGSS. All phase diagram data and thermodynamic values available in the literature were critically assessed before the optimization. Experimental investigations by EDX of ternary Cu-Mg-Zn alloys were specifically performed to provide missing data of the Cu solubilities of the Mg-Zn phases. The Laves-phases C15 (MgCu2), C14 (MgZn2) and C36 (τ,Mg2CuZn3) existing in the Cu-Mg, Mg-Zn and Cu-Mg-Zn systems were described by the {"}Compound-Energy-Formalism{"} with Cu-Zn exchange, Mg(Cu1-xZnx) and a weak tendency for antistructure atom formation (Cu and Zn on the Mg sublattices, Mg on the Cu-Zn sublattices). The binary intermetallic phases MgZn, Mg2Zn3 and Mg2Zn11 are modelled to have Cu-Zn exchange on one sublattice. The Bragg-Williams description of ordering was extended to describe the ternary range of the βCuZn phase. Estimates were made, where experimental data are not sufficient. Using the binary subsystems from the literature with small updates the Cu-Mg-Zn ternary system was calculated. In general, good agreement is obtained between calculations and experiments.",

author = "P. Liang and Seifert, {H. J.} and Lukas, {H. L.} and G. Ghosh and G. Effenberg and F. Aldinger",

note = "Funding Information: Financial support by the German UBundesministerium fiir Bildung, Wissenschaft, Forschung und Tech-nologie” (Contract 03K7208 0) within the framework of the European Community Project COST 507 is gratefully acknowledged. The authors would also like to thank P. Ochin (CNRS, Vitry, France) for preparation of the alloys. One of the authors (GG) would like to thank the Max-Planck-Gesellschaft for a visiting fellowship.",

year = "1998",

doi = "10.1016/S0364-5916(99)00009-7",

language = "English (US)",

volume = "22",

pages = "527--544",

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AU - Liang, P.

AU - Seifert, H. J.

AU - Lukas, H. L.

AU - Ghosh, G.

AU - Effenberg, G.

AU - Aldinger, F.

N1 - Funding Information: Financial support by the German UBundesministerium fiir Bildung, Wissenschaft, Forschung und Tech-nologie” (Contract 03K7208 0) within the framework of the European Community Project COST 507 is gratefully acknowledged. The authors would also like to thank P. Ochin (CNRS, Vitry, France) for preparation of the alloys. One of the authors (GG) would like to thank the Max-Planck-Gesellschaft for a visiting fellowship.

PY - 1998

Y1 - 1998

N2 - The quasibinary MgCu2-MgZn2 system was optimized with the program BINGSS. All phase diagram data and thermodynamic values available in the literature were critically assessed before the optimization. Experimental investigations by EDX of ternary Cu-Mg-Zn alloys were specifically performed to provide missing data of the Cu solubilities of the Mg-Zn phases. The Laves-phases C15 (MgCu2), C14 (MgZn2) and C36 (τ,Mg2CuZn3) existing in the Cu-Mg, Mg-Zn and Cu-Mg-Zn systems were described by the "Compound-Energy-Formalism" with Cu-Zn exchange, Mg(Cu1-xZnx) and a weak tendency for antistructure atom formation (Cu and Zn on the Mg sublattices, Mg on the Cu-Zn sublattices). The binary intermetallic phases MgZn, Mg2Zn3 and Mg2Zn11 are modelled to have Cu-Zn exchange on one sublattice. The Bragg-Williams description of ordering was extended to describe the ternary range of the βCuZn phase. Estimates were made, where experimental data are not sufficient. Using the binary subsystems from the literature with small updates the Cu-Mg-Zn ternary system was calculated. In general, good agreement is obtained between calculations and experiments.

AB - The quasibinary MgCu2-MgZn2 system was optimized with the program BINGSS. All phase diagram data and thermodynamic values available in the literature were critically assessed before the optimization. Experimental investigations by EDX of ternary Cu-Mg-Zn alloys were specifically performed to provide missing data of the Cu solubilities of the Mg-Zn phases. The Laves-phases C15 (MgCu2), C14 (MgZn2) and C36 (τ,Mg2CuZn3) existing in the Cu-Mg, Mg-Zn and Cu-Mg-Zn systems were described by the "Compound-Energy-Formalism" with Cu-Zn exchange, Mg(Cu1-xZnx) and a weak tendency for antistructure atom formation (Cu and Zn on the Mg sublattices, Mg on the Cu-Zn sublattices). The binary intermetallic phases MgZn, Mg2Zn3 and Mg2Zn11 are modelled to have Cu-Zn exchange on one sublattice. The Bragg-Williams description of ordering was extended to describe the ternary range of the βCuZn phase. Estimates were made, where experimental data are not sufficient. Using the binary subsystems from the literature with small updates the Cu-Mg-Zn ternary system was calculated. In general, good agreement is obtained between calculations and experiments.

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Thermodynamic modelling of the Cu-Mg-Zn ternary system

Abstract

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