摘要
采用相场法模拟了等温过程中枝晶长大过程。结果表明:晶粒经历了由球形经星形向复杂枝晶转变的过程;过冷度的增加使晶粒的生长速度增加。利用本模型成功模拟出各种不同择优取向的枝晶生长形貌。
Dendritic growth process during isothermal solidification was simulated by the phase-field model. The results show that, with the increase of time, crystal growth morphology changes from sphere to complex dendrite via star, The increasing undercooling can promote the rate of crystal growth. The model can successfully predict the morphologies of dendrites with various preferred growth orientations.
出处
《铸造技术》
CAS
北大核心
2012年第9期1074-1077,共4页
Foundry Technology
关键词
枝晶生长
相场法
数值模拟
dendritic growth
phase-field mode
numerical simulation
