Boundary coupled dual-equation numerical simulation on mass transfer in the process of laser cladding
The coupled numerical simulation on fluid flow, heat transfer, and mass transfer in the process of laser cladding is undertaken on the basis of the continuum model. In the simulation of mass transfer in the laser molten pool, the concentration distribution in the regions on different sides of the interface between cladding layer and substrate is calculated separately and coupled at the co-boundary. The non-equilibrium solute partition coefficient is obtained from equilibrium solute partition coefficient according to the Sobolev model. By using the developed software which is based on the commercial software PHOENICS 1.4, the distribution of Fe in laser molten pool in an experiment of cladding Stellite 6 on 12CrMoV is calculated. The obtained results well coincide with the experimental ones.
杨永强：School of Mechanical Engineering, South China University of Technology, Guangzhou 510641
卫国强：School of Mechanical Engineering, South China University of Technology, Guangzhou 510641
师文庆：School of Mechanical Engineering, South China University of Technology, Guangzhou 510641
：School of Mechanical Engineering, South China University of Technology, Guangzhou 510641
备注：This work was supported by the National Natural Science Foundation of China under Grant No.59871038 and the Foundation of State Key Laboratory of Laser Technology, Huazhong University of Science and Technology. Y. Huang's e-mail address is email@example.com.
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