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论文类型：期刊论文

发表时间：2006-12-01

发表刊物：PHILOSOPHICAL MAGAZINE LETTERS

收录刊物：SCIE、EI、Scopus

卷号：86

期号：12

页面范围：787-794

ISSN号：0950-0839

摘要：Grain growth subjected to the interplay of stochastic and curvature-driven mechanisms in a single-phase system has been investigated. Numerical results have shown that when the grains are smaller than several tens of nanometres the dominating mechanism is stochastic diffusion control of boundaries. As the grains grow the influence of the deterministic curvature- driven mechanism increases and finally controls the process. In terms of finite-difference solutions to the Fokker-Planck continuity equation, the predicted grain size approaches a log-normal distribution, which agrees well with experimental observations.