重庆大学学报：自然科学版2011，Vol.34Issue(9)：61-66,6.
连铸坯凝固晶粒生长的元胞自动机模型
Grain growth of continuous casting slab solidification based on cellular automata model
摘要
Abstract
The cellular automaton（CA） method is coupled with finite difference method to establish a stochastic nucleation and growth model.According to the actual production conditions,the solidification structure of continuous casting slab is simulated and the evolution law of the inner structure is reconstructed.It is showed that grain transformation is from equiaxed crystal to columnar crystal and then to equiaxed crystal.Thickness of three crystal layers are different in various production technological systems,thickness of surface equiaxed crystal and inner equiaxed crystal are reduced,and the results of the columnar crystal thickness are contrary,while casting speed and superheat are increasing.The results show well agreement with the stochastic nucleation,preferred growth,competitive growth and random orientation of grain.关键词
连铸坯/组织模拟/元胞自动机/柱状晶/等轴晶Key words
continuous casting slab/microstructure simulation/cellular automation/exquiaxed cystal/columnar crystal分类
矿业与冶金引用本文复制引用
陈登福,宋立伟,王启明,陈缦丽..连铸坯凝固晶粒生长的元胞自动机模型[J].重庆大学学报：自然科学版,2011,34(9):61-66,6.基金项目
国家自然科学基金资助项目 （）
高等学校博士点科研基金资助项目 （）
