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采用ADPL参数化语言,综合考虑热源模型、材料热物性参数、相变潜热、边界条件等因素,建立了连续移动高斯热源作用下TC11表面激光熔覆MCrAlY涂层三维瞬态温度场数值模型。实验结果测量值与模拟计算值的对比表明,建立的温度场数值模型具有很好的可靠性。同时,在分析涂层品质的基础上,基于该模型对TC11表面激光熔覆MCrAlY涂层的激光工艺参数进行了预报及优化,得出较优的激光工艺参数为:激光功率1 200 W、光斑直径2 mm、扫描速度400mm/min。
By using ADPL parametric language, the three-dimensional transient temperature field model of MCrAlY coating on TC11 surface under continuous moving Gaussian heat source was established considering the heat source model, material thermal properties, latent heat of transformation and boundary conditions. The comparison of the experimental results with the simulated ones shows that the established numerical model of temperature field has good reliability. At the same time, based on the analysis of coating quality, the laser process parameters of MC11Al coating on TC11 surface were predicted and optimized based on the model. The optimal laser process parameters were as follows: laser power 1 200 W, spot Diameter 2 mm, scanning speed 400mm / min.