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溶质截留对过冷共晶生长过程的影响

, PP. 1335-1339

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Abstract:

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.

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