Evaluation of the Thermodynamic Properties and Phase Equilibria of the Ordered γ′ and Disordered γ Phases in the Ni-Al-Ta System

Shihuai Zhou; Long-qing Chen; Rebecca A. MacKay; Zi-kui Liu

Evaluation of the Thermodynamic Properties and Phase Equilibria of the Ordered γ′ and Disordered γ Phases in the Ni-Al-Ta System

Shihuai Zhou, Long-qing Chen, Rebecca A. MacKay, Zi-kui Liu

Research output: Contribution to journal › Conference article › peer-review

Abstract

The phase equilibria and thermodynamic properties of the ternary Ni-Al-Ta system on Ni-rich side were analyzed. Thermodynamic descriptions of the liquid, γ-fcc, γ′-L1₂, and π-Ni₆AlTa phases were obtained using the CALPHAD (CALculation of PHase Diagrams) technique. The thermodynamics of γ-fcc and γ′-L1₂ phases were modeled with a single Gibbs energy function taking into account the crystallographic relation between the two phases. The ternary interaction parameters of the liquid and fee phases were also determined. The calculated phase diagrams of the ternary Ni-Al-Ta system show a good agreement with experimental data.

Original language	English (US)
Pages (from-to)	443-450
Number of pages	8
Journal	Materials Research Society Symposium - Proceedings
Volume	755
State	Published - Nov 10 2003
Event	Solid-State Chemistry of Inorganic Materials IV - Boston, MA, United States Duration: Dec 2 2002 → Dec 6 2002

All Science Journal Classification (ASJC) codes

Materials Science(all)
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering

Cite this

@article{680e29de3302458abb8653961c7c3762,

title = "Evaluation of the Thermodynamic Properties and Phase Equilibria of the Ordered γ′ and Disordered γ Phases in the Ni-Al-Ta System",

abstract = "The phase equilibria and thermodynamic properties of the ternary Ni-Al-Ta system on Ni-rich side were analyzed. Thermodynamic descriptions of the liquid, γ-fcc, γ′-L12, and π-Ni6AlTa phases were obtained using the CALPHAD (CALculation of PHase Diagrams) technique. The thermodynamics of γ-fcc and γ′-L12 phases were modeled with a single Gibbs energy function taking into account the crystallographic relation between the two phases. The ternary interaction parameters of the liquid and fee phases were also determined. The calculated phase diagrams of the ternary Ni-Al-Ta system show a good agreement with experimental data.",

author = "Shihuai Zhou and Long-qing Chen and MacKay, {Rebecca A.} and Zi-kui Liu",

year = "2003",

month = nov,

day = "10",

language = "English (US)",

volume = "755",

pages = "443--450",

journal = "Materials Research Society Symposium - Proceedings",

issn = "0272-9172",

publisher = "Materials Research Society",

note = "Solid-State Chemistry of Inorganic Materials IV ; Conference date: 02-12-2002 Through 06-12-2002",

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TY - JOUR

T1 - Evaluation of the Thermodynamic Properties and Phase Equilibria of the Ordered γ′ and Disordered γ Phases in the Ni-Al-Ta System

AU - Zhou, Shihuai

AU - Chen, Long-qing

AU - MacKay, Rebecca A.

AU - Liu, Zi-kui

PY - 2003/11/10

Y1 - 2003/11/10

N2 - The phase equilibria and thermodynamic properties of the ternary Ni-Al-Ta system on Ni-rich side were analyzed. Thermodynamic descriptions of the liquid, γ-fcc, γ′-L12, and π-Ni6AlTa phases were obtained using the CALPHAD (CALculation of PHase Diagrams) technique. The thermodynamics of γ-fcc and γ′-L12 phases were modeled with a single Gibbs energy function taking into account the crystallographic relation between the two phases. The ternary interaction parameters of the liquid and fee phases were also determined. The calculated phase diagrams of the ternary Ni-Al-Ta system show a good agreement with experimental data.

AB - The phase equilibria and thermodynamic properties of the ternary Ni-Al-Ta system on Ni-rich side were analyzed. Thermodynamic descriptions of the liquid, γ-fcc, γ′-L12, and π-Ni6AlTa phases were obtained using the CALPHAD (CALculation of PHase Diagrams) technique. The thermodynamics of γ-fcc and γ′-L12 phases were modeled with a single Gibbs energy function taking into account the crystallographic relation between the two phases. The ternary interaction parameters of the liquid and fee phases were also determined. The calculated phase diagrams of the ternary Ni-Al-Ta system show a good agreement with experimental data.

UR - http://www.scopus.com/inward/record.url?scp=0242354110&partnerID=8YFLogxK

UR - http://www.scopus.com/inward/citedby.url?scp=0242354110&partnerID=8YFLogxK

M3 - Conference article

AN - SCOPUS:0242354110

SN - 0272-9172

VL - 755

SP - 443

EP - 450

JO - Materials Research Society Symposium - Proceedings

JF - Materials Research Society Symposium - Proceedings

T2 - Solid-State Chemistry of Inorganic Materials IV

Y2 - 2 December 2002 through 6 December 2002

ER -

Evaluation of the Thermodynamic Properties and Phase Equilibria of the Ordered γ′ and Disordered γ Phases in the Ni-Al-Ta System

Abstract

All Science Journal Classification (ASJC) codes

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