Influence of grain boundary energy on the grain size evolution in nanocrystalline materials

Zheng Chen; Feng Liu; Wei Yang; Haifeng Wang; Gencang Yang; Yaohe Zhou

doi:10.1016/j.jallcom.2008.08.040

Influence of grain boundary energy on the grain size evolution in nanocrystalline materials

Zheng Chen
, Feng Liu
, Wei Yang
, Haifeng Wang
, Gencang Yang
, Yaohe Zhou

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

21 Scopus citations

Abstract

Combining the empirical relation for grain boundary (GB) segregation upon isothermal grain growth and the generalized parabolic growth law, the influence of GB energy on the grain size evolution in nanocrystalline (NC) materials is studied, while the grain-size-dependent solute excess is given using Mclean's equation. Satisfactory agreement between model prediction and experimental data from NC growth of dense NC gadolinia-doped ceria [J.L.M. Rupp, A. Infortuna, L.J. Gauckler, Acta Mater. 54 (2006) 1721-1730] has been achieved. Solute excess in GBs increases with grain growth and then tends to its saturated value, therefore, the inhibition of grain growth can be attributed to the reduction of GB energy through solute segregation, whereas, the consumed annealing time before the stop of grain growth is mainly affected by GB mobility.

Original language	English
Pages (from-to)	893-897
Number of pages	5
Journal	Journal of Alloys and Compounds
Volume	475
Issue number	1-2
DOIs	https://doi.org/10.1016/j.jallcom.2008.08.040
State	Published - 5 May 2009

Keywords

Grain boundaries
Nanostructured materials
Solid state reactions

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10.1016/j.jallcom.2008.08.040

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title = "Influence of grain boundary energy on the grain size evolution in nanocrystalline materials",

abstract = "Combining the empirical relation for grain boundary (GB) segregation upon isothermal grain growth and the generalized parabolic growth law, the influence of GB energy on the grain size evolution in nanocrystalline (NC) materials is studied, while the grain-size-dependent solute excess is given using Mclean's equation. Satisfactory agreement between model prediction and experimental data from NC growth of dense NC gadolinia-doped ceria [J.L.M. Rupp, A. Infortuna, L.J. Gauckler, Acta Mater. 54 (2006) 1721-1730] has been achieved. Solute excess in GBs increases with grain growth and then tends to its saturated value, therefore, the inhibition of grain growth can be attributed to the reduction of GB energy through solute segregation, whereas, the consumed annealing time before the stop of grain growth is mainly affected by GB mobility.",

keywords = "Grain boundaries, Nanostructured materials, Solid state reactions",

author = "Zheng Chen and Feng Liu and Wei Yang and Haifeng Wang and Gencang Yang and Yaohe Zhou",

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T1 - Influence of grain boundary energy on the grain size evolution in nanocrystalline materials

AU - Chen, Zheng

AU - Liu, Feng

AU - Yang, Wei

AU - Wang, Haifeng

AU - Yang, Gencang

AU - Zhou, Yaohe

PY - 2009/5/5

Y1 - 2009/5/5

N2 - Combining the empirical relation for grain boundary (GB) segregation upon isothermal grain growth and the generalized parabolic growth law, the influence of GB energy on the grain size evolution in nanocrystalline (NC) materials is studied, while the grain-size-dependent solute excess is given using Mclean's equation. Satisfactory agreement between model prediction and experimental data from NC growth of dense NC gadolinia-doped ceria [J.L.M. Rupp, A. Infortuna, L.J. Gauckler, Acta Mater. 54 (2006) 1721-1730] has been achieved. Solute excess in GBs increases with grain growth and then tends to its saturated value, therefore, the inhibition of grain growth can be attributed to the reduction of GB energy through solute segregation, whereas, the consumed annealing time before the stop of grain growth is mainly affected by GB mobility.

AB - Combining the empirical relation for grain boundary (GB) segregation upon isothermal grain growth and the generalized parabolic growth law, the influence of GB energy on the grain size evolution in nanocrystalline (NC) materials is studied, while the grain-size-dependent solute excess is given using Mclean's equation. Satisfactory agreement between model prediction and experimental data from NC growth of dense NC gadolinia-doped ceria [J.L.M. Rupp, A. Infortuna, L.J. Gauckler, Acta Mater. 54 (2006) 1721-1730] has been achieved. Solute excess in GBs increases with grain growth and then tends to its saturated value, therefore, the inhibition of grain growth can be attributed to the reduction of GB energy through solute segregation, whereas, the consumed annealing time before the stop of grain growth is mainly affected by GB mobility.

KW - Grain boundaries

KW - Nanostructured materials

KW - Solid state reactions

UR - https://www.scopus.com/pages/publications/63649122636

U2 - 10.1016/j.jallcom.2008.08.040

DO - 10.1016/j.jallcom.2008.08.040

M3 - 文章

AN - SCOPUS:63649122636

SN - 0925-8388

VL - 475

SP - 893

EP - 897

JO - Journal of Alloys and Compounds

JF - Journal of Alloys and Compounds

IS - 1-2

ER -

Influence of grain boundary energy on the grain size evolution in nanocrystalline materials

Abstract

Keywords

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