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Journal of Applied Mechanics and Technical Physics

2021 year, number 4

Nonlinear Coupled Model of Surface Treatment by a Particle Beam Taking into Account the Formation of a New Phase

A. G. Knyazeva, E. S. Parfenova
Institute of Strength Physics and Materials Science, Siberian Branch, Russian Academy of Sciences, Tomsk, Russia
Keywords: coupled model, particle beam, wave propagation, nonlinear effects, elastic stresses, diffusion, heat conduction, relaxation of heat flux, relaxation of mass flux, chemical reaction


A model of the initial stage of surface treatment of a material by a particle beam is presented. The model takes into account the mutual influence of elastic, thermal, and diffusion waves, as well as the formation of a new phase in the surface layer of the substrate. Examples of problem solution for different combinations of model parameters are shown; the dynamics of process development under the action of two consecutive pulses is illustrated. Possible partial variants of the model are given.