Journal article
An analysis of surface texture and wetting behavior for metal alloys produced by laser-powder bed fusion
Manufacturing letters, Vol.35(Suppl.), pp.540-548
08/2023
DOI: 10.1016/j.mfglet.2023.08.020
Abstract
The surface wetting behavior and its relationship with surface morphology of 3D-printed metal parts have attracted considerable attention, in large part due to the applicability of these components in fluid-related fields. In this study, the laser powder bed fusion (L-PBF) method was adopted to fabricate metal alloy parts with various materials, surface orientations, printing strategies and post-processing methods. The surface morphology and wettability of the fabricated parts were evaluated. By applying surface topography parameters, Sa, Spc and Sdr, the topographical distinctions between surfaces with various printing parameters were determined. Although both upskin and downskin surfaces are susceptible to spattered droplets and attachment of satellite particles, the results showed that more satellite particles were fused to the downskin surfaces due to greater reheating of underlying downskin surfaces, which resulted in the increased surface roughness of downskin surfaces. Post-processing methods including stress relief and EDM fluid had little effect on the surface topography, while the stress relief increased the surface hydrophobicity and EDM fluid increased the hydrophilicity. Moreover, the unusual surface superhydrophilicity was discovered on the downskin of 4340 and 316L parts. This work paves the way to systematically study the effect of materials, printing parameters, and post-processing methods on surface topography and wettability of the metal alloy made using L-PBF.
Details
- Title: Subtitle
- An analysis of surface texture and wetting behavior for metal alloys produced by laser-powder bed fusion
- Creators
- Benjamin Nelson - Western Illinois UniversityWuji Huang - University of IowaHongtao Ding - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Manufacturing letters, Vol.35(Suppl.), pp.540-548
- DOI
- 10.1016/j.mfglet.2023.08.020
- ISSN
- 2213-8463
- eISSN
- 2213-8463
- Language
- English
- Date published
- 08/2023
- Academic Unit
- Mechanical Engineering
- Record Identifier
- 9984476433702771
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