A Parallel between Laser Irradiation and Relativistic Electrons Irradiation of Solids

Oane, Mihai; Medianu, R.; Bucă, Anca M.

doi:10.5772/62353

Cited by 1 publication

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“…The laser processing of materials is a continuous subject of study from a practical and theoretical point of view [1][2][3]. Laser cladding is a very important application in laser processing [4].…”

Section: Introductionmentioning

confidence: 99%

Thermal Fields in Laser Cladding Processing: A “Fire Ball” Model. A Theoretical Computational Comparison, Laser Cladding versus Electron Beam Cladding

Oane¹,

Mihăilescu²,

Ristoscu³

2021

Nonlinear Optics - From Solitons to Similaritons

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Laser cladding processing can be found in many industrial applications. A lot of different materials processing were studied in the last years. To improve the process, one may evaluate the phenomena behaviour from a theoretical and computational point of view. In our model, we consider that the phase transition to the melted pool is treated using an absorption coefficient which can underline liquid formation. In the present study, we propose a semi-analytical model. It supposes that melted pool is in first approximation a "sphere", and in consequence, the heat equation is solved in spherical coordinates. Using the Laplace transform, we will solve the heat equation without the assumption that "time" parameter should be interpolated linearly. 3D thermal graphics of the Cu substrate are presented. Our model could be applied also for electron cladding of metals. We make as well a comparison of the cladding method using laser or electron beams. We study the process for different input powers and various beam velocities. The results proved to be in good agreement with data from literature.

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Section: Introductionmentioning

confidence: 99%