A thermokinetic description of nanoscale grain growth: Analysis of initial grain boundary excess amount

M. M. Gong; F. Liu; K. Zhang

doi:10.1016/j.scriptamat.2010.07.030

A thermokinetic description of nanoscale grain growth: Analysis of initial grain boundary excess amount

M. M. Gong, F. Liu, K. Zhang

School of Materials Sience and Engineering

Northwestern Polytechnical University Xian

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

19 Scopus citations

Abstract

A thermokinetic description was performed for nanoscale grain growth by analyzing the effect of grain boundary (GB) segregation on the initial GB excess amount, Γ_b. Compared with the model assuming a linear relation between Γ_b and grain size (i.e. Γ_b < Γ_b0, the saturated value) [Chen et al., Acta Mater. 57 (2009) 1466], the current description with Γ_b = Γ_b0, from Kirchheim's GB energy relation, is more applicable for strongly segregating alloys with Γ_b generally approaching saturation at the beginning of grain growth.

Original language	English
Pages (from-to)	989-992
Number of pages	4
Journal	Scripta Materialia
Volume	63
Issue number	10
DOIs	https://doi.org/10.1016/j.scriptamat.2010.07.030
State	Published - Nov 2010

Keywords

GB energy
Grain growth
Nanocrystalline
Segregation

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abstract = "A thermokinetic description was performed for nanoscale grain growth by analyzing the effect of grain boundary (GB) segregation on the initial GB excess amount, Γb. Compared with the model assuming a linear relation between Γb and grain size (i.e. Γb < Γb0, the saturated value) [Chen et al., Acta Mater. 57 (2009) 1466], the current description with Γb = Γb0, from Kirchheim's GB energy relation, is more applicable for strongly segregating alloys with Γb generally approaching saturation at the beginning of grain growth.",

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AU - Liu, F.

AU - Zhang, K.

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N2 - A thermokinetic description was performed for nanoscale grain growth by analyzing the effect of grain boundary (GB) segregation on the initial GB excess amount, Γb. Compared with the model assuming a linear relation between Γb and grain size (i.e. Γb < Γb0, the saturated value) [Chen et al., Acta Mater. 57 (2009) 1466], the current description with Γb = Γb0, from Kirchheim's GB energy relation, is more applicable for strongly segregating alloys with Γb generally approaching saturation at the beginning of grain growth.

AB - A thermokinetic description was performed for nanoscale grain growth by analyzing the effect of grain boundary (GB) segregation on the initial GB excess amount, Γb. Compared with the model assuming a linear relation between Γb and grain size (i.e. Γb < Γb0, the saturated value) [Chen et al., Acta Mater. 57 (2009) 1466], the current description with Γb = Γb0, from Kirchheim's GB energy relation, is more applicable for strongly segregating alloys with Γb generally approaching saturation at the beginning of grain growth.

KW - GB energy

KW - Grain growth

KW - Nanocrystalline

KW - Segregation

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JO - Scripta Materialia

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A thermokinetic description of nanoscale grain growth: Analysis of initial grain boundary excess amount

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Keywords

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