Linking phase-field model to CALPHAD: Application to precipitate shape evolution in Ni-base alloys

J. Z. Zhu; Z. K. Liu; V. Vaithyanathan; L. Q. Chen

doi:10.1016/S1359-6462(02)00013-1

Linking phase-field model to CALPHAD: Application to precipitate shape evolution in Ni-base alloys

J. Z. Zhu, Z. K. Liu, V. Vaithyanathan, L. Q. Chen

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154 Scopus citations

Abstract

A three-dimensional phase-field model was proposed to analyze the precipitate microstructure in Ni-base superalloys. CALPHAD method was used to extract the thermodynamic and kinetic parameters from the existing databases. The compositional dependence of atomic mobilities and elastic constants was considered to solve phase-field equations and elastic equilibrium equations. Analysis suggested that Ni₃Al precipitate shape evolution in a disordered face centered cubic matrix depended on the balance between interfacial energy and elastic energy relaxation.

Original language	English (US)
Pages (from-to)	401-406
Number of pages	6
Journal	Scripta Materialia
Volume	46
Issue number	5
DOIs	https://doi.org/10.1016/S1359-6462(02)00013-1
State	Published - Mar 2002

All Science Journal Classification (ASJC) codes

General Materials Science
Condensed Matter Physics
Mechanics of Materials
Mechanical Engineering
Metals and Alloys

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10.1016/S1359-6462(02)00013-1

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title = "Linking phase-field model to CALPHAD: Application to precipitate shape evolution in Ni-base alloys",

abstract = "A three-dimensional phase-field model was proposed to analyze the precipitate microstructure in Ni-base superalloys. CALPHAD method was used to extract the thermodynamic and kinetic parameters from the existing databases. The compositional dependence of atomic mobilities and elastic constants was considered to solve phase-field equations and elastic equilibrium equations. Analysis suggested that Ni3Al precipitate shape evolution in a disordered face centered cubic matrix depended on the balance between interfacial energy and elastic energy relaxation.",

author = "Zhu, {J. Z.} and Liu, {Z. K.} and V. Vaithyanathan and Chen, {L. Q.}",

note = "Funding Information: The authors are grateful for financial support from NASA under grant no. NCC3-920 and from the National Science Foundation under grant nos. DMR-0122638 and DMR-9983532. The simulation was performed at the San Diego Supercomputer Center.",

year = "2002",

month = mar,

doi = "10.1016/S1359-6462(02)00013-1",

language = "English (US)",

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T1 - Linking phase-field model to CALPHAD

T2 - Application to precipitate shape evolution in Ni-base alloys

AU - Zhu, J. Z.

AU - Liu, Z. K.

AU - Vaithyanathan, V.

AU - Chen, L. Q.

N1 - Funding Information: The authors are grateful for financial support from NASA under grant no. NCC3-920 and from the National Science Foundation under grant nos. DMR-0122638 and DMR-9983532. The simulation was performed at the San Diego Supercomputer Center.

PY - 2002/3

Y1 - 2002/3

N2 - A three-dimensional phase-field model was proposed to analyze the precipitate microstructure in Ni-base superalloys. CALPHAD method was used to extract the thermodynamic and kinetic parameters from the existing databases. The compositional dependence of atomic mobilities and elastic constants was considered to solve phase-field equations and elastic equilibrium equations. Analysis suggested that Ni3Al precipitate shape evolution in a disordered face centered cubic matrix depended on the balance between interfacial energy and elastic energy relaxation.

AB - A three-dimensional phase-field model was proposed to analyze the precipitate microstructure in Ni-base superalloys. CALPHAD method was used to extract the thermodynamic and kinetic parameters from the existing databases. The compositional dependence of atomic mobilities and elastic constants was considered to solve phase-field equations and elastic equilibrium equations. Analysis suggested that Ni3Al precipitate shape evolution in a disordered face centered cubic matrix depended on the balance between interfacial energy and elastic energy relaxation.

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Linking phase-field model to CALPHAD: Application to precipitate shape evolution in Ni-base alloys

Abstract

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