Hensel, J. ; Köhler, M. ; Uhlenberg, L. ; Castro, J. Diniz e ; Dilger, K. ; Faß, M. ; Baumgartner, J. (2024)
Laser welding of 16MnCr5 butt welds with gap: resulting weld quality and fatigue strength assessment.
In: Welding in the World, 2022, 66 (9)
doi: 10.26083/tuprints-00028122
Artikel, Zweitveröffentlichung, Verlagsversion
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Kurzbeschreibung (Abstract)
For laser welding, gaps should normally be avoided to ensure stable weld processes and high weld quality. Nonetheless, sometimes, gaps are resulting from non-optimal weld preparation in industrial applications. Within this investigation, the effects of a defocussed beam and laser beam oscillation on gap bridging abilities at reduced ambient pressure were investigated. For reference purpose, conventional laser welding with zero gap at ambient pressure was performed, too. The resulting weld geometry was investigated and correlated to gap bridging strategies and weld quality groups according to ISO 13919–1. The welds were characterized regarding their hardness and weld microstructure. Residual stress was determined by means of X-ray diffraction, and tensile tests as well as fatigue tests were conducted. The fatigue tests were evaluated by the nominal stress approach, the critical distance approach, and the stress averaging approach and correlated to weld quality measures. Resulting from this, fatigue resistance of laser welded butt welds with gap can be estimated by the FAT160 design S–N curve. The stress evaluation parameters for the determination of k_(eff)-values (ρ* = 0.4 mm, a = 0.1 mm) were confirmed.
| Typ des Eintrags: | Artikel |
|---|---|
| Erschienen: | 2024 |
| Autor(en): | Hensel, J. ; Köhler, M. ; Uhlenberg, L. ; Castro, J. Diniz e ; Dilger, K. ; Faß, M. ; Baumgartner, J. |
| Art des Eintrags: | Zweitveröffentlichung |
| Titel: | Laser welding of 16MnCr5 butt welds with gap: resulting weld quality and fatigue strength assessment |
| Sprache: | Englisch |
| Publikationsjahr: | 26 November 2024 |
| Ort: | Darmstadt |
| Publikationsdatum der Erstveröffentlichung: | 29 April 2022 |
| Ort der Erstveröffentlichung: | Berlin ; Heidelberg |
| Verlag: | Springer |
| Titel der Zeitschrift, Zeitung oder Schriftenreihe: | Welding in the World |
| Jahrgang/Volume einer Zeitschrift: | 66 |
| (Heft-)Nummer: | 9 |
| Kollation: | 15 Seiten |
| DOI: | 10.26083/tuprints-00028122 |
| URL / URN: | https://tuprints.ulb.tu-darmstadt.de/28122 |
| Zugehörige Links: | |
| Herkunft: | Zweitveröffentlichungsservice |
| Kurzbeschreibung (Abstract): | For laser welding, gaps should normally be avoided to ensure stable weld processes and high weld quality. Nonetheless, sometimes, gaps are resulting from non-optimal weld preparation in industrial applications. Within this investigation, the effects of a defocussed beam and laser beam oscillation on gap bridging abilities at reduced ambient pressure were investigated. For reference purpose, conventional laser welding with zero gap at ambient pressure was performed, too. The resulting weld geometry was investigated and correlated to gap bridging strategies and weld quality groups according to ISO 13919–1. The welds were characterized regarding their hardness and weld microstructure. Residual stress was determined by means of X-ray diffraction, and tensile tests as well as fatigue tests were conducted. The fatigue tests were evaluated by the nominal stress approach, the critical distance approach, and the stress averaging approach and correlated to weld quality measures. Resulting from this, fatigue resistance of laser welded butt welds with gap can be estimated by the FAT160 design S–N curve. The stress evaluation parameters for the determination of k_(eff)-values (ρ* = 0.4 mm, a = 0.1 mm) were confirmed. |
| Freie Schlagworte: | Laser beam welding, 16MnCr5, Fatigue, Weld quality, Effective stress approach |
| Status: | Verlagsversion |
| URN: | urn:nbn:de:tuda-tuprints-281224 |
| Sachgruppe der Dewey Dezimalklassifikatin (DDC): | 600 Technik, Medizin, angewandte Wissenschaften > 620 Ingenieurwissenschaften und Maschinenbau |
| Fachbereich(e)/-gebiet(e): | 16 Fachbereich Maschinenbau 16 Fachbereich Maschinenbau > Fachgebiet Systemzuverlässigkeit, Adaptronik und Maschinenakustik (SAM) |
| Hinterlegungsdatum: | 26 Nov 2024 14:13 |
| Letzte Änderung: | 27 Nov 2024 14:10 |
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| Suche nach Titel in: | TUfind oder in Google |
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- Laser welding of 16MnCr5 butt welds with gap: resulting weld quality and fatigue strength assessment. (deposited 26 Nov 2024 14:13) [Gegenwärtig angezeigt]
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