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Impact of Triple Junctions on Grain Growth in Nanocrystalline Materials

Vladimir Y. Novikov 


Effect of finite mobility of grain-boundary triple junctions on grain growth is studied using numerical simulation. These junctions are shown to retard grain growth, especially at small grain sizes, and can transform the growth kinetics from parabolic into linear one. It is concluded that grain-boundary junctions can contribute to microstructure stability in single-phase nanocrystalline materials. Magnitude of triple-junction mobility in nanocrystalline Fe is estimated from the experimental data on grain growth kinetics.


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Presentation: Oral at E-MRS Fall Meeting 2007, Acta Materialia Gold Medal Workshop, by Vladimir Y. Novikov
See On-line Journal of E-MRS Fall Meeting 2007

Submitted: 2007-08-14 13:34
Revised:   2009-06-07 00:44