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采用有限元差分法模拟FSX-414/MBF80/IN738体系异种瞬时液相(TLP)连接的等温凝固过程。将TLP连接模型分为2部分,并运用一个移动的液/固界面模型来研究他们。使用扩散方程对每部分接头进行预测,直到等温凝固过程结束;分别预测了这2部分的等温凝固完成时间、浓度分布曲线和固/液界面位置,认为这2部分固/液界面的交点是等温凝固的终点。为了获得一些必要的扩散数据,在不同温度、时间和真空条件下进行FSX-414/MBF80/IN738体系的瞬时液相连接实验。结果表明,实验结果与预测结果一致。
The finite element method was used to simulate the isothermal solidification process of the heterogeneous transient liquid phase (TLP) connection of FSX-414 / MBF80 / IN738 system. Divide the TLP connection model into two parts and study them using a moving liquid / solid interface model. The diffusion equation was used to predict the joints of each part until the isothermal solidification process was completed. The completion time, concentration distribution curve and solid / liquid interface of the two parts were predicted respectively. The intersection points of the two solid / liquid interfaces were isothermal The end of solidification. In order to obtain some necessary diffusion data, instantaneous liquid-phase connection experiments of FSX-414 / MBF80 / IN738 system were carried out under different temperature, time and vacuum conditions. The results show that the experimental results are consistent with the predicted results.