Improving the defect tolerance of PBF-LB/M processed 316L steel by increasing the nitrogen content

Simple item page
dc.contributor.authorStern, Felix
dc.contributor.authorBecker, Louis
dc.contributor.authorCui, Chengsong
dc.contributor.authorTenkamp, Jochen
dc.contributor.authorUhlenwinkel, Volker
dc.contributor.authorSteinbacher, Matthias
dc.contributor.authorBoes, Johannes
dc.contributor.authorLentz, Jonathan
dc.contributor.authorFechte-Heinen, Rainer
dc.contributor.authorWeber, Sebastian
dc.contributor.authorWalther, Frank
dc.date.accessioned2024-02-06T12:55:40Z
dc.date.available2024-02-06T12:55:40Z
dc.date.issued2022-08-02
dc.description.abstractNitrogen (N) in steels can improve their mechanical strength by solid solution strengthening. Processing N-alloyed steels with additive manufacturing, here laser powder bed fusion (PBF-LB), is challenging as the N-solubility in the melt can be exceeded. This degassing of N counteracts its intended positive effects. Herein, the PBF-LB processed 316L stainless steel with increased N-content is investigated and compared to PBF-LB 316L with conventional N-content. The N is introduced into the steel by nitriding the powder and mixing it with the starting powder to achieve an N-content of approximately 0.16 mass%. Thermodynamic calculations for maximum solubility to avoid N outgassing and pore formation under PBF-LB conditions are performed beforehand. Based on the results, a higher defect tolerance under fatigue characterized by Murakami model can be achieved without negatively influencing the PBF-LB processability of the 316L steel. The increased N-content leads to higher hardness (+14%), yield strength (+16%), tensile strength (+9%), and higher failure stress in short time fatigue test (+16%).en
dc.identifier.urihttp://hdl.handle.net/2003/42304
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-24141
dc.language.isoende
dc.relation.ispartofseriesAdvanced engineering materials;25(1)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/de
dc.subjectAISI 316Len
dc.subjectDefect toleranceen
dc.subjectFatigue behavioren
dc.subjectLaser powder bed fusionen
dc.subjectNitrogen alloyingen
dc.subject.ddc660
dc.subject.rswkSelektives Laserschmelzende
dc.subject.rswkAustenitischer Stahlde
dc.subject.rswkStickstoffde
dc.subject.rswkLegierende
dc.subject.rswkMaterialermüdungde
dc.titleImproving the defect tolerance of PBF-LB/M processed 316L steel by increasing the nitrogen contenten
dc.typeTextde
dc.type.publicationtypeResearchArticlede
dcterms.accessRightsopen access
eldorado.secondarypublicationtruede
eldorado.secondarypublication.primarycitationStern, F., Becker, L., Cui, C., Tenkamp, J., Uhlenwinkel, V., Steinbacher, M., Boes, J., Lentz, J., Fechte-Heinen, R., Weber, S. and Walther, F. (2023), Improving the Defect Tolerance of PBF-LB/M Processed 316L Steel by Increasing the Nitrogen Content. Adv. Eng. Mater., 25: 2200751. https://doi.org/10.1002/adem.202200751de
eldorado.secondarypublication.primaryidentifierhttps://doi.org/10.1002/adem.202200751de

Files

Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Adv Eng Mater - 2022 - Stern - Improving the Defect Tolerance of PBF‐LB M Processed 316L Steel by Increasing the Nitrogen.pdf
Size:
3.73 MB
Format:
Adobe Portable Document Format
Description:
DNB
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
4.85 KB
Format:
Item-specific license agreed upon to submission
Description:
Download

Collections

Fachgebiet Werkstoffprüftechnik