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Gas segregation during crystallization process

机译：结晶过程中的气体偏析

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Highlights•The problem of gas segregation during crystallization process is considered.•The analytical solutions of the problem for different rates of crystal growth was obtained.•The criterion allowing to predict the conditions for inevitable formation of cavities in solidified material is formulated.AbstractAnalytical solution of the problem of dissolved gas segregation from melt during the crystallization process was found. The problem was solved using 3 most commonly used geometries of crystal growth: plane, cylindrical and spherical. Shrinkage of the melt during crystallization was correctly taken into account. It was shown that in the case of equilibrium crystallization the solution becomes self-similar. The criteria allowing to predict the conditions for inevitable formation of cavities in solidified material is shown.
机译： 突出显示 • 考虑了结晶过程中气体偏析的问题。 • 针对不同晶体生长速率的问题的解析解决方案是 • 摘要 < ce：simple-para id =“ sp010” view =“ all”>找到了结晶过程中溶解气体从熔体中分离出来的问题的解析解决方案。使用三种最常用的晶体生长几何形状解决了该问题：平面，圆柱和球形。正确考虑了结晶过程中熔体的收缩。结果表明，在平衡结晶的情况下，溶液变得自相似。显示了可以预测凝固材料中不可避免地形成空腔的条件的标准。

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