Datum
2021-02-16Schlagwort
620 Ingenieurwissenschaften TribologieRapid Prototyping <Fertigung>Selektives LaserschmelzenRauigkeitMetadata
Zur Langanzeige
Aufsatz
Tribological Performance of Additively Manufactured AISI H13 Steel in Different Surface Conditions
Zusammenfassung
Additive manufacturing of metallic tribological components offers unprecedented degrees of freedom, but the surface roughness of most as-printed surfaces impedes the direct applicability of such structures, and postprocessing is necessary. Here, the tribological performance of AISI H13 steel samples was studied. These were additively manufactured through laser powder bed fusion (L-PBF), also referred to as selective laser melting (SLM). Samples were tested in four different surface conditions: as-printed, polished, ground and polished, and laser-surface-textured (LST) with round dimples. Friction experiments were conducted in a pin-on-disk fashion against bearing steel disks under lubrication with an additive-free mineral base oil for sliding speeds between 20 and 170 mm/s. Results demonstrated that, among the four surface treatments, grinding and polishing resulted in the lowest friction coefficient, followed by the as-printed state, while both polishing alone and laser-surface texturing increased the friction coefficient. Surprisingly, direct correlation between surface roughness and friction coefficient, i.e., the rougher the surface was, the higher the friction force, was not observed. Wear was minimal in all cases and below what could be detected by gravimetrical means. These results highlight the need for an adequate post-processing treatment of additively manufactured parts that are to be employed in tribological systems.
Zitierform
In: Materials Volume 14 / Issue 4 (2021-02-16) eissn:1996-1944Zitieren
@article{doi:10.17170/kobra-202308028558,
author={Guenther, Elisabeth and Kahlert, Moritz and Vollmer, Malte and Niendorf, Thomas and Greiner, Christian},
title={Tribological Performance of Additively Manufactured AISI H13 Steel in Different Surface Conditions},
journal={Materials},
year={2021}
}
0500 Oax 0501 Text $btxt$2rdacontent 0502 Computermedien $bc$2rdacarrier 1100 2021$n2021 1500 1/eng 2050 ##0##http://hdl.handle.net/123456789/14963 3000 Guenther, Elisabeth 3010 Kahlert, Moritz 3010 Vollmer, Malte 3010 Niendorf, Thomas 3010 Greiner, Christian 4000 Tribological Performance of Additively Manufactured AISI H13 Steel in Different Surface Conditions / Guenther, Elisabeth 4030 4060 Online-Ressource 4085 ##0##=u http://nbn-resolving.de/http://hdl.handle.net/123456789/14963=x R 4204 \$dAufsatz 4170 5550 {{Tribologie}} 5550 {{Rapid Prototyping <Fertigung>}} 5550 {{Selektives Laserschmelzen}} 5550 {{Rauigkeit}} 7136 ##0##http://hdl.handle.net/123456789/14963
2023-08-02T08:41:33Z 2023-08-02T08:41:33Z 2021-02-16 doi:10.17170/kobra-202308028558 http://hdl.handle.net/123456789/14963 eng Namensnennung 4.0 International http://creativecommons.org/licenses/by/4.0/ tribology additive manufacturing selective laser melting surface roughness 620 Tribological Performance of Additively Manufactured AISI H13 Steel in Different Surface Conditions Aufsatz Additive manufacturing of metallic tribological components offers unprecedented degrees of freedom, but the surface roughness of most as-printed surfaces impedes the direct applicability of such structures, and postprocessing is necessary. Here, the tribological performance of AISI H13 steel samples was studied. These were additively manufactured through laser powder bed fusion (L-PBF), also referred to as selective laser melting (SLM). Samples were tested in four different surface conditions: as-printed, polished, ground and polished, and laser-surface-textured (LST) with round dimples. Friction experiments were conducted in a pin-on-disk fashion against bearing steel disks under lubrication with an additive-free mineral base oil for sliding speeds between 20 and 170 mm/s. Results demonstrated that, among the four surface treatments, grinding and polishing resulted in the lowest friction coefficient, followed by the as-printed state, while both polishing alone and laser-surface texturing increased the friction coefficient. Surprisingly, direct correlation between surface roughness and friction coefficient, i.e., the rougher the surface was, the higher the friction force, was not observed. Wear was minimal in all cases and below what could be detected by gravimetrical means. These results highlight the need for an adequate post-processing treatment of additively manufactured parts that are to be employed in tribological systems. open access Guenther, Elisabeth Kahlert, Moritz Vollmer, Malte Niendorf, Thomas Greiner, Christian 10 Seiten doi:10.3390/ma14040928 Tribologie Rapid Prototyping <Fertigung> Selektives Laserschmelzen Rauigkeit publishedVersion eissn:1996-1944 Issue 4 Materials Volume 14 false 928
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