Some Models of Surface Treatment by Laser Melting
The IUP Journal of Mechanical Engineering, Vol. X, No. 1, 2017, February 2017, pp. 26-47
Posted: 22 May 2018
Date Written: May 9, 2018
Moving heat sources of laser melting are treated with various transformations along with a decoupling for the heat and mass transfer terms. The scale for heat diffusion is different from conduction, and when small intervals of time are involved in rapid solidification, the effect may be pronounced. Very little published work exists on the stability of the solid-liquid interface. It is essential to understand this aspect because instabilities in solidification processes will affect the final finish of the surface. Novel transforms specific to melting with convective surface conditions are applied to this analysis. Phase field theory notions are applied to specific cases for amorphous film formation.
Keywords: Laser treatment, Surface effects, Boundary conditions, Melting, Moving boundary problem
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