A combination of thermodynamic and kinetic modeling, in the framework of the CALPHAD approach, has been used to simulate the brazing process applied to the joining of a René 80 superalloy by a Df4b filler. For thermodynamic equilibrium calculations the ThermoCalc software has been used, equipped with the TCNI8 database, while diffusion simulations have been obtained using the DICTRA software. As a result, elemental as well as phase precipitation profiles in the joining area have been obtained as a function of the distance and as a function of time, during the heat treatment adopted for the brazing process. Then, calculation results have been compared to experimental observations of a real joining obtained by applying the same heat treatment of the simulation. As a conclusion the simulation procedure was validated by experiments.

中文翻译：

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应用于镍基高温合金的钎焊过程的热力学和动力学模拟

在 CALPHAD 方法的框架内，热力学和动力学模型的组合已被用于模拟应用于通过 Df4b 填料连接 René 80 高温合金的钎焊过程。对于热力学平衡计算，已使用配备 TCNI8 数据库的 ThermoCalc 软件，而使用 DICTRA 软件已获得扩散模拟。结果，在用于钎焊过程的热处理期间，作为距离和时间的函数，获得了连接区域中的元素以及相析出曲线。然后，计算结果与通过应用相同的模拟热处理获得的实际连接的实验观察结果进行了比较。作为结论，模拟程序通过实验得到验证。