摘要
建立了使用元胞自动机方法结合合金凝固过程动量、能量和质量传输计算三元合金枝晶形貌与偏析发展的数学模型。把该数学模型应用到了Fe-C-Si三元合金凝固过程,枝晶臂的生长、粗化过程,以及枝晶间的微观偏析得到了再现。同时该数学模型也描述了凝固过程熔体流动对Fe-C-Si合金凝固过程枝晶形貌发展的影响。
A Cellular Automata （CA） method coupled with transient calculations for the distributions of temperature, solute and velocity during the solidification of ternary alloy is established. The model can directly describe the evolution of both morphology and segregation during dendritic crystal growth. Calculations are performed to simulate the dendrite evolution during the solidification of Fe-C-Si alloy. Dendrite development, coarsening and micro-segregation are observed. The effect of melt flow on the morphological development during Fe-C-Si alloy solidification is also studied.
出处
《铸造》
EI
CAS
CSCD
北大核心
2006年第6期601-603,607,共4页
Foundry
关键词
元胞自动机
枝晶形貌
三元合金
凝固
cellular automata
dendrite morphology
ternary alloy
solidification
