激光熔覆K418高温合金温度场的数值模拟

Numerical Simulation of Laser Cladding Temperature Field of K418 Superalloy

采用ANSYS有限元软件对K418高温合金激光熔覆过程中的温度场进行了计算,得到了激光熔覆层中心温度的变化规律。结果表明,熔覆层中心温度表现出明显的快速熔凝特征,熔覆层中心温度与激光功率成正比,与扫描速度成反比。计算结果为优化K418高温合金激光熔覆工艺参数提供了理论依据。

The temperature field during laser cladding of K418 superalloy was simulated using ANSYS. The temperature varia tion at the center of laser cladding was attained. The results show that the temperature at the center of cladding layer is rapid melting and solidification. The temperature of the center of cladding layer is proportional to the laser power, and is inversely proportional to the sweep speed. The numerical result provides the theoretical reliance for optimization of the laser cladding parameters on K418 superalloy.