Klassen A, Scharowsky T, Körner C (2014)
Publication Language: English
Publication Status: Published
Publication Type: Journal article, Original article
Publication year: 2014
Publisher: Institute of Physics Publishing
Book Volume: 47
Article Number: 275303
Journal Issue: 27
DOI: 10.1088/0022-3727/47/27/275303
Evaporation plays an important role in many technical applications including beam-based additive manufacturing processes, such as selective electron beam or selective laser melting (SEBM/SLM). In this paper, we describe an evaporation model which we employ within the framework of a two-dimensional free surface lattice Boltzmann method. With this method, we solve the hydrodynamics as well as thermodynamics of the molten material taking into account the mass and energy losses due to evaporation and the recoil pressure acting on the melt pool. Validation of the numerical model is performed by measuring maximum melt depths and evaporative losses in samples of pure titanium and Ti-6Al-4V molten by an electron beam. Finally, the model is applied to create processing maps for an SEBM process. The results predict that the penetration depth of the electron beam, which is a function of the acceleration voltage, has a significant influence on evaporation effects. © 2014 IOP Publishing Ltd.
APA:
Klassen, A., Scharowsky, T., & Körner, C. (2014). Evaporation model for beam based additive manufacturing using free surface lattice Boltzmann methods. Journal of Physics D: Applied Physics, 47(27). https://dx.doi.org/10.1088/0022-3727/47/27/275303
MLA:
Klassen, Alexander, Thorsten Scharowsky, and Carolin Körner. "Evaporation model for beam based additive manufacturing using free surface lattice Boltzmann methods." Journal of Physics D: Applied Physics 47.27 (2014).
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