Evaluation of the thermodynamic properties and phase equilibria of the Re-Ta-W system

S. H. Zhou; Zi Kui Liu

doi:10.1007/s11661-002-0263-6

Evaluation of the thermodynamic properties and phase equilibria of the Re-Ta-W system

S. H. Zhou, Zi Kui Liu

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

6 Scopus citations

Abstract

The phase equilibria and thermodynamic properties of the Re-Ta-W system are analyzed, and a complete thermodynamic description of the ternary system is obtained with the calculation of phase diagrams (CALPHAD) technique using a computerized optimization procedure. The thermodynamic modeling of intermetallic compounds σ and χ phases with three sublattices is discussed in terms of the effects of a large number of interaction parameters in the phases. The ternary parameters ΔG_Re:Ta:W and ΔG_Re:W:Ta of the σ and χ phases are assumed to be linear combinations of the binary parameters ΔG_Re:Ta:Ta and ΔG_Re:W:W of the σ and χ phases. The ternary-interaction parameters of the liquid and bcc phases are optimized using available experimental data. The calculated phase diagrams show good agreement with the experimental data.

Original language	English (US)
Pages (from-to)	2781-2787
Number of pages	7
Journal	Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science
Volume	33
Issue number	9
DOIs	https://doi.org/10.1007/s11661-002-0263-6
State	Published - Sep 2002

All Science Journal Classification (ASJC) codes

Condensed Matter Physics
Mechanics of Materials
Metals and Alloys

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10.1007/s11661-002-0263-6

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title = "Evaluation of the thermodynamic properties and phase equilibria of the Re-Ta-W system",

abstract = "The phase equilibria and thermodynamic properties of the Re-Ta-W system are analyzed, and a complete thermodynamic description of the ternary system is obtained with the calculation of phase diagrams (CALPHAD) technique using a computerized optimization procedure. The thermodynamic modeling of intermetallic compounds σ and χ phases with three sublattices is discussed in terms of the effects of a large number of interaction parameters in the phases. The ternary parameters ΔGRe:Ta:W and ΔGRe:W:Ta of the σ and χ phases are assumed to be linear combinations of the binary parameters ΔGRe:Ta:Ta and ΔGRe:W:W of the σ and χ phases. The ternary-interaction parameters of the liquid and bcc phases are optimized using available experimental data. The calculated phase diagrams show good agreement with the experimental data.",

author = "Zhou, {S. H.} and Liu, {Zi Kui}",

note = "Funding Information: Support from the National Science Foundation under Grant No. DMR-9983532 and A Knowledge Build Fund from Exxon Mobile Research & Engineering Co. are greatly appreciated. The Thermo-Calc program is licensed from The Foundation for Computational Thermodynamics and used for all calculations.",

year = "2002",

month = sep,

doi = "10.1007/s11661-002-0263-6",

language = "English (US)",

volume = "33",

pages = "2781--2787",

journal = "Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science",

issn = "1073-5623",

publisher = "Springer Boston",

number = "9",

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T1 - Evaluation of the thermodynamic properties and phase equilibria of the Re-Ta-W system

AU - Zhou, S. H.

AU - Liu, Zi Kui

N1 - Funding Information: Support from the National Science Foundation under Grant No. DMR-9983532 and A Knowledge Build Fund from Exxon Mobile Research & Engineering Co. are greatly appreciated. The Thermo-Calc program is licensed from The Foundation for Computational Thermodynamics and used for all calculations.

PY - 2002/9

Y1 - 2002/9

N2 - The phase equilibria and thermodynamic properties of the Re-Ta-W system are analyzed, and a complete thermodynamic description of the ternary system is obtained with the calculation of phase diagrams (CALPHAD) technique using a computerized optimization procedure. The thermodynamic modeling of intermetallic compounds σ and χ phases with three sublattices is discussed in terms of the effects of a large number of interaction parameters in the phases. The ternary parameters ΔGRe:Ta:W and ΔGRe:W:Ta of the σ and χ phases are assumed to be linear combinations of the binary parameters ΔGRe:Ta:Ta and ΔGRe:W:W of the σ and χ phases. The ternary-interaction parameters of the liquid and bcc phases are optimized using available experimental data. The calculated phase diagrams show good agreement with the experimental data.

AB - The phase equilibria and thermodynamic properties of the Re-Ta-W system are analyzed, and a complete thermodynamic description of the ternary system is obtained with the calculation of phase diagrams (CALPHAD) technique using a computerized optimization procedure. The thermodynamic modeling of intermetallic compounds σ and χ phases with three sublattices is discussed in terms of the effects of a large number of interaction parameters in the phases. The ternary parameters ΔGRe:Ta:W and ΔGRe:W:Ta of the σ and χ phases are assumed to be linear combinations of the binary parameters ΔGRe:Ta:Ta and ΔGRe:W:W of the σ and χ phases. The ternary-interaction parameters of the liquid and bcc phases are optimized using available experimental data. The calculated phase diagrams show good agreement with the experimental data.

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U2 - 10.1007/s11661-002-0263-6

DO - 10.1007/s11661-002-0263-6

M3 - Article

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SN - 1073-5623

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SP - 2781

EP - 2787

JO - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

JF - Metallurgical and Materials Transactions A: Physical Metallurgy and Materials Science

IS - 9

ER -

Evaluation of the thermodynamic properties and phase equilibria of the Re-Ta-W system

Abstract

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