J. Mater. Sci. Technol. ›› 1998, Vol. 14 ›› Issue (6): 506-510.

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Kinetics and Grain Size Distribution of Two Dimensional Normal Grain Growth with the Modified Monte Carlo Simulation

Xiaoyan SONG and Guoquan LIU(Dept. of Materials Science & Engineering, University of Science and Technology Beijing, Beijing 100083, China)   

  • 收稿日期:1998-11-28 修回日期:1998-11-28 出版日期:1998-11-28 发布日期:2009-10-10

Kinetics and Grain Size Distribution of Two Dimensional Normal Grain Growth with the Modified Monte Carlo Simulation

Xiaoyan SONG and Guoquan LIU(Dept. of Materials Science & Engineering, University of Science and Technology Beijing, Beijing 100083, China)   

  • Received:1998-11-28 Revised:1998-11-28 Online:1998-11-28 Published:2009-10-10

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摘要： 1.IntroductionNormalgraingrowth(NGG)isawhversalphe-nomenoninpolycrystallinematerialssuchaspuremetals,alloys,ceramics,etc.l1~4].IthasbeenalongtAnesincepeopleattemptedt9deduceinthetheorythegrainsizedistributionfunction(GSDF)F(u)li'slsl6](uistherelativegrainsize),whichreflectswhquelythedistributionstateofthegrainsizeinthewholesystemanddisplaysevolutionofthegrainsizecondgUrationmorepreciselythant....

Abstract: The two-dimensional normal grain growth has been simulated with Monte Carlo method. With a newly modified algorithm, the attained time exponent of grain growth n equals 0.49±0.01,very close to the theoretical value 0.5. By simulating the complete process of normal grain growth, the grain size distribution is found to be initially a gamma distribution, then varies continuously and slowly with time, finally approaches the function proposed by Hillert in 1965 at the quasi steady grain growth stage. The so-called "self-similarity" of the grain size distribution is discussed according to the new simulation results.