Motion of crystalline inclusions by interface diffusion in the proximity of free surfaces

Roberto Bergamaschini; Brian A. Rosen; Francesco Montalenti; Jérôme Colin

doi:10.1007/s11051-019-4658-3

Motion of crystalline inclusions by interface diffusion in the proximity of free surfaces

Roberto Bergamaschini^*, Brian A. Rosen, Francesco Montalenti, Jérôme Colin

^*Corresponding author for this work

Department of Materials Science and Engineering

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

1 Scopus citations

Abstract

Triggered by experimental observations of nanometer-sized Ni precipitate motion in a La₂O₃ matrix, the migration and morphological evolution by interface diffusion of an initially circular two-dimensional precipitate located near the free surface of its matrix is numerically investigated by means of phase-field simulations. Considering isotropic interface and elastic energies, it is found that the precipitate migrates towards the free surface, suitably adapting its shape during the motion. The case of two precipitates located near the free surface is also considered as well as the problem of an evolving precipitate near a squared corner of the matrix free surfaces. [Figure not available: see fulltext.].

Original language	English
Article number	271
Journal	Journal of Nanoparticle Research
Volume	21
Issue number	12
DOIs	https://doi.org/10.1007/s11051-019-4658-3
State	Published - 1 Dec 2019

Keywords

Alloys
Diffusion
Modeling and simulation
Phase-field simulations
Precipitates
Strain energy

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10.1007/s11051-019-4658-3

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title = "Motion of crystalline inclusions by interface diffusion in the proximity of free surfaces",

abstract = "Triggered by experimental observations of nanometer-sized Ni precipitate motion in a La2O3 matrix, the migration and morphological evolution by interface diffusion of an initially circular two-dimensional precipitate located near the free surface of its matrix is numerically investigated by means of phase-field simulations. Considering isotropic interface and elastic energies, it is found that the precipitate migrates towards the free surface, suitably adapting its shape during the motion. The case of two precipitates located near the free surface is also considered as well as the problem of an evolving precipitate near a squared corner of the matrix free surfaces. [Figure not available: see fulltext.].",

keywords = "Alloys, Diffusion, Modeling and simulation, Phase-field simulations, Precipitates, Strain energy",

author = "Roberto Bergamaschini and Rosen, {Brian A.} and Francesco Montalenti and J{\'e}r{\^o}me Colin",

note = "Publisher Copyright: {\textcopyright} 2019, Springer Nature B.V.",

year = "2019",

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doi = "10.1007/s11051-019-4658-3",

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T1 - Motion of crystalline inclusions by interface diffusion in the proximity of free surfaces

AU - Bergamaschini, Roberto

AU - Rosen, Brian A.

AU - Montalenti, Francesco

AU - Colin, Jérôme

PY - 2019/12/1

Y1 - 2019/12/1

N2 - Triggered by experimental observations of nanometer-sized Ni precipitate motion in a La2O3 matrix, the migration and morphological evolution by interface diffusion of an initially circular two-dimensional precipitate located near the free surface of its matrix is numerically investigated by means of phase-field simulations. Considering isotropic interface and elastic energies, it is found that the precipitate migrates towards the free surface, suitably adapting its shape during the motion. The case of two precipitates located near the free surface is also considered as well as the problem of an evolving precipitate near a squared corner of the matrix free surfaces. [Figure not available: see fulltext.].

AB - Triggered by experimental observations of nanometer-sized Ni precipitate motion in a La2O3 matrix, the migration and morphological evolution by interface diffusion of an initially circular two-dimensional precipitate located near the free surface of its matrix is numerically investigated by means of phase-field simulations. Considering isotropic interface and elastic energies, it is found that the precipitate migrates towards the free surface, suitably adapting its shape during the motion. The case of two precipitates located near the free surface is also considered as well as the problem of an evolving precipitate near a squared corner of the matrix free surfaces. [Figure not available: see fulltext.].

KW - Alloys

KW - Diffusion

KW - Modeling and simulation

KW - Phase-field simulations

KW - Precipitates

KW - Strain energy

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Motion of crystalline inclusions by interface diffusion in the proximity of free surfaces

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