The quality and microstructural properties of the clad deposits during the laser cladding depend on several operating parameters of the laser fusion (LF) process of the heat-resistant powders. Selection of parameters based on the study of the microstructure evolution by analyzing the experimental cladding is difficult. We have proposed the numerical model of recrystallization of the clad deposit during the laser fusion with coaxial supply of the heat-resistant nickel-based alloy powders. We have demonstrated the influence of adjoint heat transfer processes, kinetics of crystallization and diffusion of the dissolved matter on the microstructural properties of the deposited bead. The model is based on the use of the surface mechanism of the crystal phase growth.


Разработка: студия Green Art