Pore and grain boundary migration under a temperature gradient: A phase-field model study

Biner, S. B.

doi:10.1088/0965-0393/24/3/035019

Title: Pore and grain boundary migration under a temperature gradient: A phase-field model study

Full Record
Other Related Research

Abstract

In this study, the collective migration behavior of pores and grain boundaries under a temperature gradient is studied for simple single crystal, bi-crystal and polycrystal configurations with a phase-field model formulism. For simulation of the microstructure of solids, composed of pores and grain boundaries, the results indicate that not only the volume fraction of pores, but also its spatial partitioning between the grain boundary junctions and the grain boundary segments appears to be important. In addition to various physical properties, the evolution kinetics, under given temperature gradients, will be strongly influenced with the initial morphology of a poly-crystalline microstructure.

Authors:

Biner, S. B. ^[1]

Idaho National Lab. (INL), Idaho Falls, ID (United States)

Publication Date:: 2016-03-16

Research Org.:: Idaho National Lab. (INL), Idaho Falls, ID (United States)

Sponsoring Org.:: USDOE

OSTI Identifier:: 1294278

Report Number(s):: INL/JOU-15-35523
Journal ID: ISSN 0965-0393

Grant/Contract Number:: AC07-05ID14517

Resource Type:: Accepted Manuscript

Journal Name:: Modelling and Simulation in Materials Science and Engineering

Additional Journal Information:: Journal Volume: 24; Journal Issue: 3; Journal ID: ISSN 0965-0393

Publisher:: IOP Publishing

Country of Publication:: United States

Language:: English

Subject:: 36 MATERIALS SCIENCE; phase-field model; pore and grain boundary migration

Citation Formats


                    Biner, S. B. Pore and grain boundary migration under a temperature gradient: A phase-field model study.  United States: N. p., 2016. 
Web.  doi:10.1088/0965-0393/24/3/035019.

Copy to clipboard


                    Biner, S. B. Pore and grain boundary migration under a temperature gradient: A phase-field model study.  United States.  https://doi.org/10.1088/0965-0393/24/3/035019

Copy to clipboard


                    Biner, S. B. Wed .  
"Pore and grain boundary migration under a temperature gradient: A phase-field model study".  United States.  https://doi.org/10.1088/0965-0393/24/3/035019.  https://www.osti.gov/servlets/purl/1294278.

Copy to clipboard


                    
@article{osti_1294278,

  title        = {Pore and grain boundary migration under a temperature gradient: A phase-field model study},

  author       = {Biner, S. B.},

  abstractNote = {In this study, the collective migration behavior of pores and grain boundaries under a temperature gradient is studied for simple single crystal, bi-crystal and polycrystal configurations with a phase-field model formulism. For simulation of the microstructure of solids, composed of pores and grain boundaries, the results indicate that not only the volume fraction of pores, but also its spatial partitioning between the grain boundary junctions and the grain boundary segments appears to be important. In addition to various physical properties, the evolution kinetics, under given temperature gradients, will be strongly influenced with the initial morphology of a poly-crystalline microstructure.},

  doi          = {10.1088/0965-0393/24/3/035019},

  journal      = {Modelling and Simulation in Materials Science and Engineering},

  number       = 3,

  volume       = 24,

  place        = {United States},

  year         = {2016},

  month        = {3}

}

Copy to clipboard

Journal Article:

Free Publicly Available Full Text

Accepted Manuscript (DOE)

Publisher's Version of Record

https://doi.org/10.1088/0965-0393/24/3/035019

Other availability

Search WorldCat to find libraries that may hold this journal

Citation Metrics:

Cited by: 1 work

Citation information provided by
Web of Science

Save / Share:

Export Metadata

Save to My Library

Similar Records in DOE PAGES and OSTI.GOV collections:

Diffusion-induced grain-boundary migration in ceria-stabilized tetragonal zirconia polycrystals

Journal Article Schmid, H K - Journal of the American Ceramic Society; (USA)

The microstructure and microchemistry of grain-boundary regions in (CeO{sub 2} + La{sub 2}O{sub 3})-stabilized tetragonal ZrO{sub 2} polycrystals (Ce(La)-TZP) were studied by means of transmission electron microscopy (TEM). Evidence was found for the existence of crystalline and vitreous intergranular phases situated in small pockets at multiple grain junctions and in thin films along grain boundaries. In this ceramic system grain-boundary migration was observed in-situ in the TEM in sample areas subjected to electron irradiation. Interfaces migrated away from their centers of curvature. Evidence was found for Ce de-alloying in the volume swept by the advancing boundaries. It is suggested thatmore »« less
https://doi.org/10.1111/j.1151-2916.1991.tb06892.x
Simulation of grain growth and pore migration in a thermal gradient

Journal Article Tikare, V ; Holm, E A - Journal of the American Ceramic Society

The Potts Monte Carlo simulation was used to simulate microstructural evolution in uranium dioxide fuel rods. During service, grain growth, pore migration, and thermal segregation of the pores and UO{sub 2} occur in the rods in a thermal gradient. In this investigation, the authors developed a model which simulates simultaneous grain growth, pore migration, and thermal segregation of the pores and UO{sub 2} in a temperature gradient. Grain growth in a thermal gradient was simulated using the Monte Carlo Potts model technique developed by Anderson, Srolovitz, and co-workers. Pore migration was simulated using conserved dynamics with minimum-energy exchanges at amore »« less
https://doi.org/10.1111/j.1151-2916.1998.tb02365.x
Testing thermal gradient driving force for grain boundary migration using molecular dynamics simulations

Journal Article Bai, Xian-Ming ; Zhang, Yongfeng ; Tonks, Michael R. - Acta Materialia

Strong thermal gradients in low-thermal-conductivity ceramics may drive extended defects, such as grain boundaries and voids, to migrate in preferential directions. In this work, molecular dynamics simulations are conducted to study thermal gradient driven grain boundary migration and to verify a previously proposed thermal gradient driving force equation, using uranium dioxide as a model system. It is found that a thermal gradient drives grain boundaries to migrate up the gradient and the migration velocity increases under a constant gradient owing to the increase in mobility with temperature. Different grain boundaries migrate at very different rates due to their different intrinsicmore »« less
https://doi.org/10.1016/j.actamat.2014.11.019
Testing thermal gradient driving force for grain boundary migration using molecular dynamics simulations

Journal Article Bai, Xian-Ming ; Zhang, Yongfeng ; Tonks, Michael R. - Acta Materialia

Strong thermal gradients in low-thermal-conductivity ceramics may drive extended defects, such as grain boundaries and voids, to migrate in preferential directions. In this work, molecular dynamics simulations are conducted to study thermal-gradient-driven grain boundary migration and to verify a previously proposed thermal gradient driving force equation, using uranium dioxide as a model system. It is discovered that a thermal gradient drives grain boundaries to migrate up the gradient, and the migration velocity increases under a constant gradient owing to the increase in mobility with temperature. Different grain boundaries migrate at very different rates owing to their different intrinsic mobilities. Themore »« less
Cited by 6
https://doi.org/10.1016/j.actamat.2014.11.019

Full Text Available
Investigation of grain-boundary geometry and pores morphology in dense and porous cubic zirconia polycrystals

Journal Article Bobrowski, Piotr ; Faryna, Marek ; Pędzich, Zbigniew - Materials Research Bulletin

Highlights: • Cubic zirconia sinters were investigated in three dimensions using dual-beam FEGSEM. • The 3D-EBSD technique was successfully applied to non-conductive ceramics. • New sample preparation approach to automated 3D-EBSD was proposed. • Grain boundary microstructures were reconstructed from inverse pole figure maps. • Pore microstructures were reconstructed from image quality maps. - Abstract: Three-dimensional electron backscatter diffraction technique was used for the visualization of grain boundary geometry and pore morphology in cubic zirconia. A set of four samples sintered under different conditions was investigated. Specimens which were characterized by energy dispersive spectroscopy and X-ray diffraction were entirely composedmore »« less
https://doi.org/10.1016/J.MATERRESBULL.2014.06.004

Similar Records