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Behavior of powder particles on melt pool surfaces
Open accessAbstract
Additive Manufacturing is in progress to change the production and manufacturing environments and possibilities; however, the complex processes taking place are not completely understood yet. A better understanding of the incorporation mechanism of the particles into the melt pool during blown powder processes could lead to methods to increase the powder and energy efficiency. Therefore, the incorporation mechanism was investigated in experiments and simulation. High-speed images made it possible to observe the behavior of single particles on the melt pool. A model based on the temperature-dependent surface tension/energy difference between the particle and the melt pool calculated the time until particle incorporation. It was shown that the surface tension characteristics during particle heating can even lift the particle from the melt pool. The calculated wetting behavior in combination with high kinetic energies should lead to an immediate immersion of the particle into the melt pool. Since observations do not show this behavior, it is concluded that the surface tension plays a role in the incorporation mechanism, but other effects like the occurrence of oxide layers or additional particle heating by the laser beam seem to lead to different mechanisms and heat conductions to support an earlier incorporation.
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“The most significant factor to affect incorporation time can be considered to be the surface tension forces, which are based on the composition of the melt pool and its temperature [23].”
From Laser metal deposition of copper on diverse metals using green laser sources (2020) · cites this paper as [23]
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Research works printed but not linked: 21
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Cited by
Sorted by citations
Laser metal deposition of copper on diverse metals using green laser sources
Siva Prasad, H., Brueckner, F., Volpp, J., & Kaplan, A. F. H. (2020) · The International Journal of Advanced Manufacturing Technology · doi:10.1007/s00170-020-05117-z · Cited by 117
Self-citation
Metadata
- Authors
- Volpp, J.
- Affiliations
- Luleå University of Technology (SE)
- Corresponding author
- Volpp, Joerg
- ORCID
- Volpp, Joerg
- Venue
- The International Journal of Advanced Manufacturing Technology
- Published
- 2019-01-24
- Volume
- 102
- Issue
- 5-8
- Pages
- 2201-2210
- ISSN
- 0268-3768 (ISSN-L)
- 1433-3015
- OpenAlex
- W2913385021
- Cited by
- 25
- References
- 0
- Citations by year
- 2026: 2 · 2025: 5 · 2024: 1 · 2023: 5 · 2022: 6 · 2021: 1 · 2020: 3 · 2019: 2
- FWCI
- 1.69
- Type
- journal article
- Language
- en
- Open access
- hybrid
- doi.org
- Licence
- Locations
- The International Journal of Advanced Manufacturing Technology (publishedVersion, cc-by)
- KTH Publication Database DiVA (KTH Royal Institute of Technology) (submittedVersion, other-oa)
- Funders
- Bundesministerium f?r Bildung und Forschung
- VINNOVA (2017-03240)
- Topics
- Physical Sciences › Engineering › Mechanical Engineering › Additive Manufacturing Materials and Processes
- Physical Sciences › Engineering › Mechanical Engineering › Welding Techniques and Residual Stresses
- Physical Sciences › Engineering › Mechanical Engineering › Powder Metallurgy Techniques and Materials
- Keywords
- molten pool, surface tension, wettability, additive manufacturing, particle heating, oxide layer, laser heating, high-speed imaging
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