Phase-field model for diffusional phase transformations in elastically inhomogeneous polycrystals

Tae Wook Heo; Saswata Bhattacharyya; Long Qing Chen

doi:10.4028/www.scientific.net/SSP.172-174.1084

Phase-field model for diffusional phase transformations in elastically inhomogeneous polycrystals

Tae Wook Heo, Saswata Bhattacharyya, Long Qing Chen

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

2 Scopus citations

Abstract

A phase-field model is described for predicting the diffusional phase transformation process in elastically inhomogeneous polycrystals. The elastic interactions are incorporated by solving the mechanical equilibrium equation using the Fourier-spectral iterative-perturbation scheme taking into account elastic modulus inhomogeneity. A number of examples are presented, including grain boundary segregation, precipitation of second-phase particles in a polycrystal, and interaction between segregation at a grain boundary and coherent precipitates inside grains. It is shown that the local pressure distribution due to coherent precipitates leads to highly inhomogeneous solute distribution along grain boundaries.

Original language	English (US)
Title of host publication	Solid-Solid Phase Transformations in Inorganic Materials
Publisher	Trans Tech Publications Ltd
Pages	1084-1089
Number of pages	6
ISBN (Print)	9783037851432
DOIs	https://doi.org/10.4028/www.scientific.net/SSP.172-174.1084
State	Published - 2011

Publication series

Name	Solid State Phenomena
Volume	172-174
ISSN (Print)	1012-0394

All Science Journal Classification (ASJC) codes

Atomic and Molecular Physics, and Optics
General Materials Science
Condensed Matter Physics

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10.4028/www.scientific.net/SSP.172-174.1084

Cite this

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title = "Phase-field model for diffusional phase transformations in elastically inhomogeneous polycrystals",

abstract = "A phase-field model is described for predicting the diffusional phase transformation process in elastically inhomogeneous polycrystals. The elastic interactions are incorporated by solving the mechanical equilibrium equation using the Fourier-spectral iterative-perturbation scheme taking into account elastic modulus inhomogeneity. A number of examples are presented, including grain boundary segregation, precipitation of second-phase particles in a polycrystal, and interaction between segregation at a grain boundary and coherent precipitates inside grains. It is shown that the local pressure distribution due to coherent precipitates leads to highly inhomogeneous solute distribution along grain boundaries.",

author = "Heo, {Tae Wook} and Saswata Bhattacharyya and Chen, {Long Qing}",

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isbn = "9783037851432",

series = "Solid State Phenomena",

publisher = "Trans Tech Publications Ltd",

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Phase-field model for diffusional phase transformations in elastically inhomogeneous polycrystals. / Heo, Tae Wook; Bhattacharyya, Saswata; Chen, Long Qing.
Solid-Solid Phase Transformations in Inorganic Materials. Trans Tech Publications Ltd, 2011. p. 1084-1089 (Solid State Phenomena; Vol. 172-174).

Research output: Chapter in Book/Report/Conference proceeding › Conference contribution

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AU - Heo, Tae Wook

AU - Bhattacharyya, Saswata

AU - Chen, Long Qing

PY - 2011

Y1 - 2011

N2 - A phase-field model is described for predicting the diffusional phase transformation process in elastically inhomogeneous polycrystals. The elastic interactions are incorporated by solving the mechanical equilibrium equation using the Fourier-spectral iterative-perturbation scheme taking into account elastic modulus inhomogeneity. A number of examples are presented, including grain boundary segregation, precipitation of second-phase particles in a polycrystal, and interaction between segregation at a grain boundary and coherent precipitates inside grains. It is shown that the local pressure distribution due to coherent precipitates leads to highly inhomogeneous solute distribution along grain boundaries.

AB - A phase-field model is described for predicting the diffusional phase transformation process in elastically inhomogeneous polycrystals. The elastic interactions are incorporated by solving the mechanical equilibrium equation using the Fourier-spectral iterative-perturbation scheme taking into account elastic modulus inhomogeneity. A number of examples are presented, including grain boundary segregation, precipitation of second-phase particles in a polycrystal, and interaction between segregation at a grain boundary and coherent precipitates inside grains. It is shown that the local pressure distribution due to coherent precipitates leads to highly inhomogeneous solute distribution along grain boundaries.

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BT - Solid-Solid Phase Transformations in Inorganic Materials

PB - Trans Tech Publications Ltd

ER -

Phase-field model for diffusional phase transformations in elastically inhomogeneous polycrystals

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