一种自相似二维晶粒长大过程的Monte Carlo仿真

基金项目:

国家自然科学基金项目资助课题(No.50171008)

详细信息

A Monte Carlo Simulation of Two-dimensional Grain Growth Process with Self-Similar Size Distribution

Materials Science and Engineering School, University of Science and Technology Beijing, Beijing 100083, China

摘要: 采用Monte Carlo方法仿真了以Weibull尺寸分布为初始组织的正常晶粒长大过程.结果显示,二维正常晶粒长大发展到准稳态长大阶段时,其晶粒尺寸分布不是经典Hillert理论所预测的尺寸分布,而是仍然保持Weibull分布,并且参数基本不发生变化.与国际上同类研究成果的比较进一步表明,不同β值的Weibull分布很适用于表征二维晶粒长大的准稳态晶粒尺寸分布,且表征效果优于文献中的已有工作.
- Monte Carlo仿真 /
- 晶粒长大 /
- 显微组织演化
Abstract: To investigate the effect of initial grain size distribution on normal grain growth, Monte Carlo simulation was performed starting from an initial microstructure with the Weibull grain size distribution in two-dimension. The results show that the grain structure evolved alike with the initial, and the grain size distribution of the quasi-stationary state could be described well by the Weibull function but not by classical Hillert distribution. Comparison with some other results further suggests that Weibull distribution with different β values may well be used to describe the quasi-stationary grain size distribution.
- Monte Carlo simulation /
- grain growth /
- microstructure evolution