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Kinetic phase diagram for a binary system near the transition to diffusionless solidification
EPL ( IF 1.8 ) Pub Date : 2021-05-07 , DOI: 10.1209/0295-5075/133/58003
G. L. Buchbinder

The rapid solidification of a binary mixture in the region of the interface velocities V close to the diffusion speed in the bulk of the liquid phase V D is considered within the framework of the local nonequilibrium approach. In this high-speed region the derivation of the analytical expression for the “temperature-velocity” response function representing kinetic phase diagram is given without using the concept of the equilibrium phase diagram. The modes of movement of the interface both without and with the drag effect are analyzed. It is shown that the drag effect can be accompanied by a local interface temperature maximum at $V = V_D$ .



中文翻译:

接近无扩散凝固转变的二元系统的动力学相图

在局部非平衡方法的框架内考虑在界面速度V附近的区域中的二元混合物的快速凝固接近大部分液相中的扩散速度V D。在这个高速区域,没有使用平衡相图的概念,给出了代表动力学相图的“温度-速度”响应函数的解析表达式的推导。分析了没有和有拖曳效应的界面的运动模式。结果表明,阻力效应可以伴随着在 处的局部界面温度最大值。 $V = V_D$

更新日期:2021-05-07
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