A multi-component evaporation model for beam melting processes

Journal article
(Original article)


Publication Details

Author(s): Klassen A, Forster V, Körner C
Journal: Modelling and Simulation in Materials Science and Engineering
Publisher: Institute of Physics Publishing
Publication year: 2017
Volume: 25
Journal issue: 2
ISSN: 1361-651X
Language: English


Abstract


In additive manufacturing using laser or electron beam melting technologies, evaporation losses and changes in chemical composition are known issues when processing alloys with volatile elements. In this paper, a recently described numerical model based on a two-dimensional free surface lattice Boltzmann method is further developed to incorporate the effects of multi-component evaporation. The model takes into account the local melt pool composition during heating and fusion of metal powder. For validation, the titanium alloy Ti-6Al-4V is melted by selective electron beam melting and analysed using mass loss measurements and high-resolution microprobe imaging. Numerically determined evaporation losses and spatial distributions of aluminium compare well with experimental data. Predictions of the melt pool formation in bulk samples provide insight into the competition between the loss of volatile alloying elements from the irradiated surface and their advective redistribution within the molten region.



FAU Authors / FAU Editors

Küng, Vera
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Klassen, Alexander
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)
Körner, Carolin Prof. Dr.-Ing.
Lehrstuhl für Werkstoffwissenschaften (Werkstoffkunde und Technologie der Metalle)


How to cite

APA:
Klassen, A., Forster, V., & Körner, C. (2017). A multi-component evaporation model for beam melting processes. Modelling and Simulation in Materials Science and Engineering, 25(2). https://dx.doi.org/10.1088/1361-651X/aa5289

MLA:
Klassen, Alexander, Vera Forster, and Carolin Körner. "A multi-component evaporation model for beam melting processes." Modelling and Simulation in Materials Science and Engineering 25.2 (2017).

BibTeX: 

Last updated on 2018-19-04 at 03:52