利用渐近分析方法研究了远场来流引起的对流对过冷熔体中球状晶体的生长形态的影响。
The influence on the growth morphology of the spherical crystal in the undercooled melt imposed by the far field flow is studied by the asymptotic method.
采用相场模型和有限差分方法，模拟了过冷纯金属熔体的枝晶生长，计算区域为二维正方形均匀网格。
Dendrite growth has been simulated with the phase field method and finite difference schemes on a two dimensional rectangular domain with a uniform square mesh.
模拟结果表明熔体过冷度和树枝晶的计盒维数呈近似抛物线关系。
The results of simulations indicate that the relationship between melt undercooling and box counting dimension of dendrite is close to parabola.
采用捕获液态界面改进的相场方法，系统地研究了结构起伏、能量起伏对过冷纯金属熔体中树枝晶生长的影响规律。
The affecting law of structure fluctuation and energy fluctuation on dendrite growth in pure undercooled melt was studied by simulation of a phase-field method.
系统研究了该合金的微观组织演化与熔体过冷度之间的关系。
The relation of microstructure evolution vs undercooling in Ni-Si eutectic alloy was systematically investigated.
我们的模拟结果表明金属熔体中的二十面体短程序随着温度的降低而增加，并在过冷液态中而占优势。
The results of the pair analysis technique show that the icosahedral short-range order may grow with the decrease of the temperature and may become more prevalent in the undercooled state.
结果表明，过冷纯熔体中非快速凝固晶体生长的液固界面是不稳定的。
It is concluded that the liquid-solid planar interface is not stable for non-rapid solidification in undercooled melts.
二者的主要差别在于粉末的熔体结晶速率快，结晶峰尖窄，过冷程度低。
The crystallizing rate for the powder melt at constant cooling rate was quicker, its crystallizing peak was higher and sharper, and its super cooling degree was lower.
采用相场模型和有限差分方法，模拟了过冷纯金属熔体的枝晶生长，计算区域为二维正方形均匀网格。
The dendrite growth of pure metal in undercooled melts was simulated by using phase field model(PFM) and finite difference schemes.
在相场模拟中，通过捕获液态界面，系统研究了过冷对纯金属熔体凝固过程中树枝晶侧向分枝形貌的影响。
The growth process of side-branching of dendrites during solidification of pure Ni melt was studied by the phase-field simulation.
高温下CaF2的挥发造成了在晶体生长后期熔体中组分偏离化学计量比，出现组分过冷，形成包裹物。
The volatilization of CaF2 at a high temperature causes the deviation in composition from the stoichiometry, which results in the formation of inclusions and an increase in the dislocation density.
高温下CaF2的挥发造成了在晶体生长后期熔体中组分偏离化学计量比，出现组分过冷，形成包裹物。
The volatilization of CaF2 at a high temperature causes the deviation in composition from the stoichiometry, which results in the formation of inclusions and an increase in the dislocation density.
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