以过冷凝固条件下已有的共晶生长理论模型为基础,考虑了快速非平衡凝固条件下会出现溶质截留现象, 探讨溶质截留对生长过程的影响. 发现溶质截留的引入, 增大了共晶生长速度, 减小了层片间距和枝晶尖端半径. 初始平衡溶质分配系数越小, 溶质截留对过冷共晶生长过程的影响越显著.
Abstract：Considering the solute trapping in non-equilibrium rapid solidification, in this paper, we discuss the effect of solute trapping on the growth process basing on the existent eutectic models. It is found that the growth velocity is increased and lamellar spacing and dendritic tip radius are decreased, and the smaller the equilibrium solute partition coefficient, the more prominent the effect.
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