Release Time:2019-03-10  Hits:

Indexed by: Journal Article

Date of Publication: 2006-12-01

Journal: PHILOSOPHICAL MAGAZINE LETTERS

Included Journals: Scopus、EI、SCIE

Volume: 86

Issue: 12

Page Number: 787-794

ISSN: 0950-0839

Abstract: 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.