枝晶(数学)
对流
材料科学
微观结构
半径
Crystal(编程语言)
机械
温度梯度
热力学
热的
扩散
工作(物理)
定向凝固
流量(数学)
冶金
几何学
气象学
物理
数学
计算机安全
计算机科学
程序设计语言
标识
DOI:10.1140/epjs/s11734-023-00860-2
摘要
Abstract Convection affect primary crystalline structure, particularly, the dendrite crystal velocity and dendrite tip radius. The present work aims on the influence of the convective flow on the primary dendrite spacing between neighbouring crystals within the dendrite ensemble. Solidification of a binary alloy is considered within the model of stagnant boundary layer, under imposed thermal gradient which influence on the crystal microstructure and chemical microsegregation. Chemical composition in the solidifying liquid and crystalline solid is derived from the solution of the solute diffusion transport equation taking into account the convective flow. The model results are consistent with the Scheil-Brody-Flemings model, experimental data and computational results.
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