Investigation on Surface Roughness in Electron Beam Selective Melting by Mesoscale Model

Chao Chao Wu; Muhammad Qasim Zafar; Hai Yan Zhao

doi:10.4028/www.scientific.net/MSF.1016.1630

Paper Titles

Processing of Nanostructured Bulk Fe-Cr Alloys by Severe Plastic Deformation
p.1603

Study of the Microstructure and Mechanical Properties Obtained by Laser Boost in SLM Process for the Ti-64 Alloy
p.1611

The Influence of HPT on Microstructure and Wear Resistance of Al-7wt%Si-2wt%Fe Alloy
p.1618

Mechanical Behaviour of Rubber Material with Consideration to Mullins Effect
p.1624

Investigation on Surface Roughness in Electron Beam Selective Melting by Mesoscale Model
p.1630

Static Recrystallization in Aluminum/Graphene Composites
p.1636

Correlation of Segregation Energies of Ni and Fe with Mendeleev Number
p.1642

Operando Monitoring of Charging Processes in Battery Cathodes by Magnetometry and Positron Annihilation
p.1647

Goss Texture Evolution in a Grain-Oriented Fe-6.5wt%Si Steel Processed by Strip-Casting
p.1653

HomeMaterials Science ForumMaterials Science Forum Vol. 1016Investigation on Surface Roughness in Electron...

Investigation on Surface Roughness in Electron Beam Selective Melting by Mesoscale Model

Abstract:

Modeling and simulation in meso-scale have been used to investigate the complicated physics involving powder behaviors during the forming process in electron beam selective melting. But it is difficult to quantitatively predict the forming quality of parts due to the huge calculation amount for multi-layer and multi-pass cases. In this paper, we presented a novel frame for investigating the side surface roughness of fabricated components based on single-track simulation. An integrated model of selective beam melting with considering the random distribution powder particles was developed. The surface morphologies of simulated tracks were used to calculated the surface roughness, and the calculated results were validated by experiment data from independent literature. The effects of heat input were discussed in detail. It reveals that the side roughness increases with a lower heat input. The mechanism behind is the fluctuation of tracks induced by the asymmetry of molten pool, which is related to the coalescence of melting particles and unevenness of powder distribution.

You might also be interested in these eBooks

View Preview

Info:

Periodical:

Materials Science Forum (Volume 1016)

Pages:

1630-1635

DOI:

https://doi.org/10.4028/www.scientific.net/MSF.1016.1630

Citation:

Cite this paper

Online since:

January 2021

Authors:

Chao Chao Wu*, Muhammad Qasim Zafar, Hai Yan Zhao

Keywords:

Additive Manufacturing, Electron Beam Selective Melting, Numerical Simulation, Surface Roughness

Export:

RIS, BibTeX

Price:

Permissions:

Request Permissions

* - Corresponding Author

References

[1] C. Guo, W. Ge, F. Lin, Effects of scanning parameters on material deposition during Electron Beam Selective Melting of Ti-6Al-4V powder, J. Mater. Process. Technol. 217 (2015) 148–157.

DOI: 10.1016/j.jmatprotec.2014.11.010

Google Scholar

[2] C. Guo, F. Lin, W. Ge, Study on the fabrication process of 316L stainless steel via electron beam selective melting, J. Mech. Eng. 50 (2014) 152–158.

DOI: 10.3901/jme.2014.21.152

Google Scholar

[3] T. DebRoy, H L Wei, J S Zuback, et al. Additive manufacturing of metallic components–process, structure and properties, Progress in Materials Science, 92 (2018) 112-224.

DOI: 10.1016/j.pmatsci.2017.10.001

Google Scholar

[4] X. Gong, T. Anderson, K. Chou, Review on powder-based electron beam additive manufacturing technology, ASME/ISCIE 2012 international symposium on flexible automation. American Society of Mechanical Engineers Digital Collection, (2012) 507-515.

DOI: 10.1115/isfa2012-7256

Google Scholar

[5] D. Greitemeier, C. Dalle Donne, F. Syassen, J. Eufinger, T. Melz, Effect of surface roughness on fatigue performance of additive manufactured Ti–6Al–4V, Materials Science and Technology 32 (7) (2016) 629–634.

DOI: 10.1179/1743284715y.0000000053

Google Scholar

[6] M. Jamshidinia, R. Kovacevic, The influence of heat accumulation on the surface roughness in powder-bed additive manufacturing, Surf. Topogr. Metrol. Prop. 3 (1) (2015) 14003.

DOI: 10.1088/2051-672x/3/1/014003

Google Scholar

[7] A. Safdar, H. Z. He, L.‐Y. Wei, A. Snis, L. E. Chavez de Paz, Effect of process parameters settings and thickness on surface roughness of EBM produced Ti-6Al-4V, Rapid Prototyping Journal 18 (5) (2012) 401–408.

DOI: 10.1108/13552541211250391

Google Scholar

[8] E. Yasa, J. Deckers, J.‐P. Kruth, The investigation of the influence of laser re-melting on density, surface quality and microstructure of selective laser melting parts, Rapid Prototyping Journal 17 (5) (2011) 312–327.

DOI: 10.1108/13552541111156450

Google Scholar

[9] AB Spierings, N Herres, G Levy. Influence of the particle size distribution on surface quality and mechanical properties in AM steel parts, Rapid Prototyp J; 17(3) (2011) 195–202.

DOI: 10.1108/13552541111124770

Google Scholar

[10] S. Shrestha, K.Chou. A build surface study of Powder-Bed Electron Beam Additive Manufacturing by 3D thermo-fluid simulation and white-light interferometry, International Journal of Machine Tools and Manufacture, 121 (2017) 37-49.

DOI: 10.1016/j.ijmachtools.2017.04.005

Google Scholar

[11] W. Yan, W. Ge, Y. Qian, S. Lin, B. Zhou, W.K. Liu, F. Lin, G.J. Wagner, Multi-physics modeling of single/multiple-track defect mechanisms in electron beam selective melting, Acta Mater. 134 (2017) 324–333.

DOI: 10.1016/j.actamat.2017.05.061

Google Scholar

[12] W. Yan, W. Ge, Y. Qian, S. Lin, B. Zhou, W.K. Liu, F. Lin, G.J. Wagner, Multi-physics modeling of single/multiple-track defect mechanisms in electron beam selective melting, Acta Mater. 134 (2017) 324–333.

DOI: 10.1016/j.actamat.2017.05.061

Google Scholar

[13] C. Körner, A. Bauereiß, E. Attar, Fundamental consolidation mechanisms during selective beam melting of powders, Model. Simul. Mater. Sci. Eng. 21 (2013) 85011.

DOI: 10.1088/0965-0393/21/8/085011

Google Scholar

[14] A. Bauereiß, T. Scharowsky, C. Körner, Defect generation and propagation mechanism during additive manufacturing by selective beam melting, J. Mater. Process. Technol. 214 (2014) 2522–2528.

DOI: 10.1016/j.jmatprotec.2014.05.002

Google Scholar