中国机械工程2001，Vol.12Issue(3)：328-331,4.
采用Cellular Automaton法模拟铝合金的微观组织
Microstructure Simulation of Al Alloy with Cellular Automaton Method
摘要
Abstract
Microstructure simulation of aluminum alloy casting was carriedout by Cellular Automaton model.Continuous nucleation model was used to describe heterogeneous nucleation of the liquid metal.Gauss distribution function was employed to describe the relation between the density of nucleation sites and the temperature and was integrated to get the grain density at a given undercooling.Dendrite tip growth kinetics and preferential 〈100〉 crystallographic orientation were also taken into account.Therefore not only the stochastic nature of nucleation process but also the deterministic of dendrite growth was considered in the calculation.Simulation results showed that the obtained grain size increases with the increasing of average nucleate undercooling ΔTN.The modeling results were analyzed mathematically.关键词
铝合金/微观组织模拟/Cellular Automaton方法/形核与长大分类
通用工业技术引用本文复制引用
许庆彦,柳百成..采用Cellular Automaton法模拟铝合金的微观组织[J].中国机械工程,2001,12(3):328-331,4.基金项目
国家自然科学基金重大资助项目(59990470-3)、国家重点基础研究规划项目(G2000067208-3)、清华大学重点基础研究资助项目。 （59990470-3）
