Modelling the overlap of nucleation, growth and coarsening during precipitation

J. D. Robson

doi:10.1016/j.actamat.2004.06.024

Modelling the overlap of nucleation, growth and coarsening during precipitation

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

Abstract

A modified version of the Kampmann and Wagner numerical precipitation model has been used to investigate the effect of interfacial energy, solute supersaturation, and diffusivity on the kinetics of precipitation in binary alloys. It is predicted that overlap occurs between nucleation and coarsening when the precipitate/matrix interfacial energy falls below a critical value or the supersaturation increases above a critical value. Changes in diffusivity have no effect on the overlap. These predictions have been used to produce a kinetic map showing the critical supersaturation at which nucleation and coarsening are predicted to overlap for different alloy systems. This has important implications in the interpretation of the results of kinetic experiments. © 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	4669-4676
Number of pages	7
Journal	Acta Materialia
Volume	52
Issue number	15
DOIs	https://doi.org/10.1016/j.actamat.2004.06.024
Publication status	Published - 6 Sept 2004

Keywords

Coarsening
Modelling
Nucleation

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10.1016/j.actamat.2004.06.024

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title = "Modelling the overlap of nucleation, growth and coarsening during precipitation",

abstract = "A modified version of the Kampmann and Wagner numerical precipitation model has been used to investigate the effect of interfacial energy, solute supersaturation, and diffusivity on the kinetics of precipitation in binary alloys. It is predicted that overlap occurs between nucleation and coarsening when the precipitate/matrix interfacial energy falls below a critical value or the supersaturation increases above a critical value. Changes in diffusivity have no effect on the overlap. These predictions have been used to produce a kinetic map showing the critical supersaturation at which nucleation and coarsening are predicted to overlap for different alloy systems. This has important implications in the interpretation of the results of kinetic experiments. {\textcopyright} 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.",

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AU - Robson, J. D.

PY - 2004/9/6

Y1 - 2004/9/6

N2 - A modified version of the Kampmann and Wagner numerical precipitation model has been used to investigate the effect of interfacial energy, solute supersaturation, and diffusivity on the kinetics of precipitation in binary alloys. It is predicted that overlap occurs between nucleation and coarsening when the precipitate/matrix interfacial energy falls below a critical value or the supersaturation increases above a critical value. Changes in diffusivity have no effect on the overlap. These predictions have been used to produce a kinetic map showing the critical supersaturation at which nucleation and coarsening are predicted to overlap for different alloy systems. This has important implications in the interpretation of the results of kinetic experiments. © 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

AB - A modified version of the Kampmann and Wagner numerical precipitation model has been used to investigate the effect of interfacial energy, solute supersaturation, and diffusivity on the kinetics of precipitation in binary alloys. It is predicted that overlap occurs between nucleation and coarsening when the precipitate/matrix interfacial energy falls below a critical value or the supersaturation increases above a critical value. Changes in diffusivity have no effect on the overlap. These predictions have been used to produce a kinetic map showing the critical supersaturation at which nucleation and coarsening are predicted to overlap for different alloy systems. This has important implications in the interpretation of the results of kinetic experiments. © 2004 Acta Materialia Inc. Published by Elsevier Ltd. All rights reserved.

KW - Coarsening

KW - Modelling

KW - Nucleation

U2 - 10.1016/j.actamat.2004.06.024

DO - 10.1016/j.actamat.2004.06.024

M3 - Article

SN - 1873-2453

VL - 52

SP - 4669

EP - 4676

JO - Acta Materialia

JF - Acta Materialia

IS - 15

ER -

Modelling the overlap of nucleation, growth and coarsening during precipitation

Abstract

Keywords

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