Coarsening kinetics of δ′-Al3Li precipitates: Phase-field simulation in 2D and 3D

V. Vaithyanathan; L. Q. Chen

doi:10.1016/S1359-6462(00)00323-7

Coarsening kinetics of δ′-Al₃Li precipitates: Phase-field simulation in 2D and 3D

V. Vaithyanathan, L. Q. Chen

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34 Scopus citations

Abstract

The coarsening kinetics of δ-Al₃Li precipitates in a disordered face-centered cubic matrix were examined by the continuum diffuse-interface phase-field method. The δ′-α two-phase microstructure was described by a three-component order parameter field and a concentration field. The temporal evolution of the fields were obtained by solving the coupled Allen-Cahn and Cahn-Hilliard equations. The cube of average particle size distribution (PSD) was dependent with time in both 2D and 3D systems. The scaling functions and PSDs obtained in both 2D and 3D exhibited similar approximately time-invariant profiles. The main difference between 2D and 3D systems was in the rate coarsening for the same set of thermodynamic and kinetic parameters.

Original language	English (US)
Pages (from-to)	967-973
Number of pages	7
Journal	Scripta Materialia
Volume	42
Issue number	10
DOIs	https://doi.org/10.1016/S1359-6462(00)00323-7
State	Published - Apr 28 2000

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(00)00323-7

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title = "Coarsening kinetics of δ′-Al3Li precipitates: Phase-field simulation in 2D and 3D",

abstract = "The coarsening kinetics of δ-Al3Li precipitates in a disordered face-centered cubic matrix were examined by the continuum diffuse-interface phase-field method. The δ′-α two-phase microstructure was described by a three-component order parameter field and a concentration field. The temporal evolution of the fields were obtained by solving the coupled Allen-Cahn and Cahn-Hilliard equations. The cube of average particle size distribution (PSD) was dependent with time in both 2D and 3D systems. The scaling functions and PSDs obtained in both 2D and 3D exhibited similar approximately time-invariant profiles. The main difference between 2D and 3D systems was in the rate coarsening for the same set of thermodynamic and kinetic parameters.",

author = "V. Vaithyanathan and Chen, {L. Q.}",

note = "Funding Information: The authors are grateful for the financial support from the National Science Foundation under DMR96–33719.",

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T1 - Coarsening kinetics of δ′-Al3Li precipitates

T2 - Phase-field simulation in 2D and 3D

AU - Vaithyanathan, V.

AU - Chen, L. Q.

N1 - Funding Information: The authors are grateful for the financial support from the National Science Foundation under DMR96–33719.

PY - 2000/4/28

Y1 - 2000/4/28

N2 - The coarsening kinetics of δ-Al3Li precipitates in a disordered face-centered cubic matrix were examined by the continuum diffuse-interface phase-field method. The δ′-α two-phase microstructure was described by a three-component order parameter field and a concentration field. The temporal evolution of the fields were obtained by solving the coupled Allen-Cahn and Cahn-Hilliard equations. The cube of average particle size distribution (PSD) was dependent with time in both 2D and 3D systems. The scaling functions and PSDs obtained in both 2D and 3D exhibited similar approximately time-invariant profiles. The main difference between 2D and 3D systems was in the rate coarsening for the same set of thermodynamic and kinetic parameters.

AB - The coarsening kinetics of δ-Al3Li precipitates in a disordered face-centered cubic matrix were examined by the continuum diffuse-interface phase-field method. The δ′-α two-phase microstructure was described by a three-component order parameter field and a concentration field. The temporal evolution of the fields were obtained by solving the coupled Allen-Cahn and Cahn-Hilliard equations. The cube of average particle size distribution (PSD) was dependent with time in both 2D and 3D systems. The scaling functions and PSDs obtained in both 2D and 3D exhibited similar approximately time-invariant profiles. The main difference between 2D and 3D systems was in the rate coarsening for the same set of thermodynamic and kinetic parameters.

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Coarsening kinetics of δ′-Al₃Li precipitates: Phase-field simulation in 2D and 3D

Abstract

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