Grain growth as a stochastic and curvature-driven process

被引：3
|
作者：
Zheng, Y. G.
Lu, C. [1 ]
Mai, Y. -W.
Zhang, H. W.
Chen, Z.
机构：
[1] Univ Sydney, Sch Aerospa Mech & Mechatron Engn J07, CAMT, Sydney, NSW 2006, Australia
[2] Dalian Univ Technol, Dept Mech Engn, State Key Lab Struct Anal Ind Equipment, Dalian 116024, Peoples R China
[3] Curtin Univ Technol, Dept Mech Engn, Perth, WA 6845, Australia
[4] Univ Missouri, Dept Civil & Environm Engn, Columbia, MO 65211 USA
来源：
PHILOSOPHICAL MAGAZINE LETTERS | 2006年 / 86卷 / 12期
基金：
澳大利亚研究理事会; 中国国家自然科学基金;
关键词：
D O I：
10.1080/09500830601042357
中图分类号：
T [工业技术];
学科分类号：
08 ;
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.
引用
收藏
页码：787 / 794
页数：8
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