Abstract
The article presents a scheme for constructing models using kinetic laws for additional parameters. The work describes the example of the model of electro-beam treatment of a material with a coating. The study uses the simple kinetic law for powder layer evolution due to shrinkage. The model takes into account the melting of powder layer and substrate. The numerical solution gives the temperature field, evolution of the molten pool, the heat affected zone and the surface relief for different moments of time. The results depend on the treatment rate and electron beam energy.
Highlights
Electron-beam technologies are interesting for development of manufacturing and for investigation in the directions involving the modification of material properties and its surfaces [1,2,3]
Thermophysical phenomena determining the additive manufacturing results are the same [5] that take a place in the processes of laser and electron beam welding, build up welding and surface treatment [6]
Because the thickness of consecutive powder layers is small in comparison with specific heat scale and detail size and one powder layer includes only several particles, the approach schematically depicted in Figure 1 is methodologically correct and will yield prognostic models
Summary
Series: Materials Science and Engineering 140 (2016) 012021 doi:10.1088/1757-899X/140/1/012021. Mathematical modelling of thermal and kinetic phenomena in electron-beam technologies. A G Knyazeva, I L Pobol, V N Demidov Tomsk Polytechnic University, Tomsk, Russia 2 Physical-technical Institute of the National Academy of Sciences of Belarus, Minsk 3 Institute of Strength Physics and Materials Science of the Siberian Branch of the Russian Academy of Science, Tomsk, Russia
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