【摘要】 基于平面流铸快速凝固过程的牛顿冷却方式假定和过冷熔体中的枝晶生长理论 ,提出了凝固相重量分数计算的物理模型和数学计算方法。该模型可对快速凝固过程不同相的过冷度、晶体的生长速度以及最终的相组成进行半定量的计算和预测。Ni3 1 5Al68 5合金条带的快速凝固过程的计算结果和试验测定数据有较好的吻合。更多还原

【Abstract】 Based on Newton heat transfer model in the interface and dendrite growth theory in undercooled melt,the physical and mathematical model for calculation weight fraction of solidified phases was proposed.The method can be used to predict the undercooling,growth velocity and weight fraction of phases in rapidly solidified processing in semiquantitatively.The numerical simulation results for Ni 31^5Al 68^5 alloy ribbons agreed with the experiments analyses satisfactorily更多还原