象接口那样的各种各样的材料和计算参数的影响运动系数(贝它),表面精力(西格马), anisotropy 参数(鲸鱼群妈)和噪音振幅(高山哈)在微分离之上,模式被使用合并了集中域方程的阶段地模型在晶体成长期间调查。当适当价值被分到时,计算结果显示那一,在固体的溶质作文的变动范围是稳定的,并且影响一上微分离是小的;越大接口运动系数贝它,在固体的溶质作文越尖锐地波动,但是在前面的微分离的严厉连接还原剂;与 anisotropy 参数鲸鱼群妈的增长,在固体的溶质作文的变化尖锐地成为更多,并且在前面接口的微分离的严厉加重;越,在固体的溶质作文的变动范围是越多 smaller,并且越多更小大表面精力西格马微分离的度是。
The influence of various material and computational parameters such as interface kinetic coefficient(β), surface energy(σ), anisotropy parameter(γ) and the noise amplitude(α) upon microsegregation patterns during the crystal growth was investigated by using the phase-field model which incorporated the concentration field equations. The computed results indicate that, when the appropriate value is assigned to a, the fluctuant scope of solute composition in the solid is steady, and the influence of a on microsegregation is small; the larger the interface kinetic coefficient r, the more acutely the solute composition in the solid fluctuates, but the severity of microsegregation in the front interface reduces; with the increment of anisotropy parameter y, the fluctuation of solute composition in the solid becomes more acutely, and the severity of microsegregation in the front interface aggravates; the larger surface energy a, the smaller the fluctuant scope of solute composition in the solid is, and the smaller the degree of microsegregation is.