连续冷却多阶段快速凝固过程起始形核温度的计算

1.中国科学院力学研究所非线性国家重点实验室,北京,100080

2.郑州大学材料研究中心,郑州,450002

3.中国科学院力学研究所非线性国家重点实验室,北京,100080

基金项目: 国家自然科学基金(59771033)

Calculation method of initial nucleation temperature of phases during rapid solidification by continuous cooling of multi-step reaction

基于快速凝固的瞬态形核理论和对连续冷却条件下整个温度区间的瞬态形核数和晶核体积积分,导出了连续冷却多阶段快速凝固条件下过冷熔体中各析出相起始形核温度的计算方法.假定界面传热处于牛顿冷却方式,对Ni-A1合金平面流铸条带形成过程中析出的化合物相起始形核温度做了计算.

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