Grain boundary mobilities in polycrystals

Jin Zhang; Wolfgang Ludwig; Yubin Zhang; Hans Henrik B. Sørensen; David J. Rowenhorst; Akinori Yamanaka; Peter W. Voorhees; Henning F. Poulsen

doi:10.1016/j.actamat.2020.03.044

Grain boundary mobilities in polycrystals

Jin Zhang, Wolfgang Ludwig, Yubin Zhang, Hans Henrik B. Sørensen, David J. Rowenhorst, Akinori Yamanaka, Peter W. Voorhees, Henning F. Poulsen^*

^*Corresponding author for this work

Materials Science and Engineering

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

36 Scopus citations

Abstract

Most metals, ceramics, semiconductors and rocks are composed of small crystals known as grains. When annealed, this polycrystalline structure coarsens, thus allowing the properties of a material to be tailored for a particular application. The mobility of grain boundaries is thought to be determined by the crystallography of the adjacent crystals, but experimental validation in bulk polycrystalline materials is lacking. Here we developed a novel fitting methodology by direct comparison of a time-resolved three-dimensional experimental data to simulations of the evolution of 1501 grains in iron. The comparison allows reduced mobilities of 1619 grain boundaries to be determined simultaneously. We find that the reduced mobilities vary by three orders of magnitude and in general exhibit no correlation with the boundary's five macroscopic degrees of freedom, implying that grain growth is governed by other factors.

Original language	English (US)
Pages (from-to)	211-220
Number of pages	10
Journal	Acta Materialia
Volume	191
DOIs	https://doi.org/10.1016/j.actamat.2020.03.044
State	Published - Jun 1 2020

Keywords

Ferrite
Grain growth
Microstructure
Phase field
X-ray synchrotron radiation

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Ceramics and Composites
Polymers and Plastics
Metals and Alloys

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10.1016/j.actamat.2020.03.044

Cite this

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title = "Grain boundary mobilities in polycrystals",

abstract = "Most metals, ceramics, semiconductors and rocks are composed of small crystals known as grains. When annealed, this polycrystalline structure coarsens, thus allowing the properties of a material to be tailored for a particular application. The mobility of grain boundaries is thought to be determined by the crystallography of the adjacent crystals, but experimental validation in bulk polycrystalline materials is lacking. Here we developed a novel fitting methodology by direct comparison of a time-resolved three-dimensional experimental data to simulations of the evolution of 1501 grains in iron. The comparison allows reduced mobilities of 1619 grain boundaries to be determined simultaneously. We find that the reduced mobilities vary by three orders of magnitude and in general exhibit no correlation with the boundary's five macroscopic degrees of freedom, implying that grain growth is governed by other factors.",

keywords = "Ferrite, Grain growth, Microstructure, Phase field, X-ray synchrotron radiation",

author = "Jin Zhang and Wolfgang Ludwig and Yubin Zhang and S{\o}rensen, {Hans Henrik B.} and Rowenhorst, {David J.} and Akinori Yamanaka and Voorhees, {Peter W.} and Poulsen, {Henning F.}",

note = "Funding Information: This study was supported by grants from the Danish Innovation Fund for the center CINEMA [1305-00032B], National Institute for Standards and Technology through the Center for Hierarchical Materials Design contract [70NANB19H00], Office of Naval Research and The US Naval Research Laboratory [N0001415WX00004]. We thank Danscatt [7055-00005B] for travel support and ESRF for beamtime [HC2933]. We thank the use of computing resources at the DTU Computing Center. Funding Information: This study was supported by grants from the Danish Innovation Fund for the center CINEMA [1305-00032B], National Institute for Standards and Technology through the Center for Hierarchical Materials Design contract [70NANB19H00], Office of Naval Research and The US Naval Research Laboratory [N0001415WX00004]. We thank Danscatt [7055-00005B] for travel support and ESRF for beamtime [HC2933]. We thank the use of computing resources at the DTU Computing Center. Publisher Copyright: {\textcopyright} 2020 Acta Materialia Inc.",

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month = jun,

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doi = "10.1016/j.actamat.2020.03.044",

language = "English (US)",

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T1 - Grain boundary mobilities in polycrystals

AU - Zhang, Jin

AU - Ludwig, Wolfgang

AU - Zhang, Yubin

AU - Sørensen, Hans Henrik B.

AU - Rowenhorst, David J.

AU - Yamanaka, Akinori

AU - Voorhees, Peter W.

AU - Poulsen, Henning F.

N1 - Funding Information: This study was supported by grants from the Danish Innovation Fund for the center CINEMA [1305-00032B], National Institute for Standards and Technology through the Center for Hierarchical Materials Design contract [70NANB19H00], Office of Naval Research and The US Naval Research Laboratory [N0001415WX00004]. We thank Danscatt [7055-00005B] for travel support and ESRF for beamtime [HC2933]. We thank the use of computing resources at the DTU Computing Center. Funding Information: This study was supported by grants from the Danish Innovation Fund for the center CINEMA [1305-00032B], National Institute for Standards and Technology through the Center for Hierarchical Materials Design contract [70NANB19H00], Office of Naval Research and The US Naval Research Laboratory [N0001415WX00004]. We thank Danscatt [7055-00005B] for travel support and ESRF for beamtime [HC2933]. We thank the use of computing resources at the DTU Computing Center. Publisher Copyright: © 2020 Acta Materialia Inc.

PY - 2020/6/1

Y1 - 2020/6/1

N2 - Most metals, ceramics, semiconductors and rocks are composed of small crystals known as grains. When annealed, this polycrystalline structure coarsens, thus allowing the properties of a material to be tailored for a particular application. The mobility of grain boundaries is thought to be determined by the crystallography of the adjacent crystals, but experimental validation in bulk polycrystalline materials is lacking. Here we developed a novel fitting methodology by direct comparison of a time-resolved three-dimensional experimental data to simulations of the evolution of 1501 grains in iron. The comparison allows reduced mobilities of 1619 grain boundaries to be determined simultaneously. We find that the reduced mobilities vary by three orders of magnitude and in general exhibit no correlation with the boundary's five macroscopic degrees of freedom, implying that grain growth is governed by other factors.

AB - Most metals, ceramics, semiconductors and rocks are composed of small crystals known as grains. When annealed, this polycrystalline structure coarsens, thus allowing the properties of a material to be tailored for a particular application. The mobility of grain boundaries is thought to be determined by the crystallography of the adjacent crystals, but experimental validation in bulk polycrystalline materials is lacking. Here we developed a novel fitting methodology by direct comparison of a time-resolved three-dimensional experimental data to simulations of the evolution of 1501 grains in iron. The comparison allows reduced mobilities of 1619 grain boundaries to be determined simultaneously. We find that the reduced mobilities vary by three orders of magnitude and in general exhibit no correlation with the boundary's five macroscopic degrees of freedom, implying that grain growth is governed by other factors.

KW - Ferrite

KW - Grain growth

KW - Microstructure

KW - Phase field

KW - X-ray synchrotron radiation

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VL - 191

SP - 211

EP - 220

JO - Acta Materialia

JF - Acta Materialia

ER -

Grain boundary mobilities in polycrystals

Abstract

Keywords

ASJC Scopus subject areas

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