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用ＺＭＬＭＣ超高梯度定向凝固装置（固液界面前沿的温度梯度可达１３００Ｋ／ｃｍ）研究竟凝固速率范围内籽晶法制备含细亚结构的ＤＤ３单晶的起动生长段的组织演化与选择特征试验获得了直径为７ｍｍ的ＤＤ３单晶合金，起动生长段组织演化对界面前沿液相中的温度梯度ＧＬ，系统稳定抽拉速度Ｖ，系统起动时的升速模式及系统干扰等因素的基本依赖关系，并对该非稳态自组织过程的内在控制因素及其形成机制进行了初步的分析．
Using ZMLMC ultra-high-gradient directional solidification device (the temperature gradient at the front of the solid-liquid interface can reach 1300K / cm), the microstructure evolution and selective characteristics of the starting growth segment of the DD3 single crystal containing the sub-structure The experimental results show that the microstructure and mechanical properties of DD3 single crystal alloy with a diameter of 7mm are basically dependent on the evolution of the microstructure of the starting growth zone, such as the temperature gradient GL in the liquid phase at the interface and the steady speed of drawing system V, the speedup mode at system startup and the system disturbance Relationship between the non-steady-state self-organization process and the internal control factors and the formation mechanism of a preliminary analysis.