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基于Ginzburg-Landau理论和单晶粒的枝晶生长模型,发展了一个单相场控制的多个晶粒的枝晶生长模型.采用相场和溶质场耦合的方法,以Al-2%Cu合金为例模拟了二元合金等温凝固过程中多个晶粒的生长过程.结果表明,这个模型的计算结果展现了多个晶粒枝晶的竞争生长,能较真实的再现凝固过程中的枝晶的生长过程.
Based on the Ginzburg-Landau theory and the single-crystal dendritic growth model, a single-phase controlled growth model of multiple grains was developed. Al-2% Cu alloy As an example to simulate the growth process of multiple grains in the isothermal solidification process of binary alloys.The results show that the calculated results of this model show the competitive growth of multiple dendrites and can more faithfully reproduce the dendrite The growth process.