Influence of a Pronounced Pre-Deformation on the Attachment of Melt Droplets and the Fatigue Behavior of Laser-Cut AISI 304
Laser cutting is a suitable manufacturing method for generating complex geometries for sheet metal components. However, their cyclic load capacity is reduced compared to, for example, milled components. This is due to the influence of the laser-cut edge, whose characteristic features act as crack in...
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| Format: | Article |
| Language: | English |
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MDPI AG
2023-01-01
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| Series: | Metals |
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| Online Access: | https://www.mdpi.com/2075-4701/13/2/201 |
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| author | André T. Zeuner Thomas Wanski Sebastian Schettler Jonas Fell Andreas Wetzig Robert Kühne Sarah C. L. Fischer Martina Zimmermann |
| author_facet | André T. Zeuner Thomas Wanski Sebastian Schettler Jonas Fell Andreas Wetzig Robert Kühne Sarah C. L. Fischer Martina Zimmermann |
| author_sort | André T. Zeuner |
| collection | DOAJ |
| description | Laser cutting is a suitable manufacturing method for generating complex geometries for sheet metal components. However, their cyclic load capacity is reduced compared to, for example, milled components. This is due to the influence of the laser-cut edge, whose characteristic features act as crack initiation sites, especially resolidified material in the form of burr and melt droplets. Since sheet metal components are often formed into their final geometry after cutting, another important factor influencing fatigue behavior is the effect of the forming process on the laser-cut edge. In particular, the effect of high degrees of deformation has not yet been researched in detail. Accordingly, sheets of AISI 304 were processed by laser cutting and pre-deformed. In the process, α’-martensite content was set to be comparable despite different degrees of deformation. It was found that deformation to high elongations caused a large part of the melt adhesions to fall off, but those still attaching were partially detached and thus formed an initial notch for crack initiation. This significantly lowered the fatigue strength. |
| first_indexed | 2024-03-11T08:26:35Z |
| format | Article |
| id | doaj.art-bd5837a5b3374d1eb121525a79864b7f |
| institution | Directory Open Access Journal |
| issn | 2075-4701 |
| language | English |
| last_indexed | 2024-03-11T08:26:35Z |
| publishDate | 2023-01-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Metals |
| spelling | doaj.art-bd5837a5b3374d1eb121525a79864b7f2023-11-16T22:06:05ZengMDPI AGMetals2075-47012023-01-0113220110.3390/met13020201Influence of a Pronounced Pre-Deformation on the Attachment of Melt Droplets and the Fatigue Behavior of Laser-Cut AISI 304André T. Zeuner0Thomas Wanski1Sebastian Schettler2Jonas Fell3Andreas Wetzig4Robert Kühne5Sarah C. L. Fischer6Martina Zimmermann7Institute of Materials Science, Technische Universität Dresden, 01069 Dresden, GermanyInstitute of Materials Science, Technische Universität Dresden, 01069 Dresden, GermanyFraunhofer Institute for Material and Beam Technology IWS, 01277 Dresden, GermanyDepartment of Materials Science and Engineering, Saarland University, 66123 Saarbrucken, GermanyFraunhofer Institute for Material and Beam Technology IWS, 01277 Dresden, GermanyFraunhofer Institute for Material and Beam Technology IWS, 01277 Dresden, GermanyFraunhofer Institute for Nondestructive Testing IZFP, 66123 Saarbrucken, GermanyInstitute of Materials Science, Technische Universität Dresden, 01069 Dresden, GermanyLaser cutting is a suitable manufacturing method for generating complex geometries for sheet metal components. However, their cyclic load capacity is reduced compared to, for example, milled components. This is due to the influence of the laser-cut edge, whose characteristic features act as crack initiation sites, especially resolidified material in the form of burr and melt droplets. Since sheet metal components are often formed into their final geometry after cutting, another important factor influencing fatigue behavior is the effect of the forming process on the laser-cut edge. In particular, the effect of high degrees of deformation has not yet been researched in detail. Accordingly, sheets of AISI 304 were processed by laser cutting and pre-deformed. In the process, α’-martensite content was set to be comparable despite different degrees of deformation. It was found that deformation to high elongations caused a large part of the melt adhesions to fall off, but those still attaching were partially detached and thus formed an initial notch for crack initiation. This significantly lowered the fatigue strength.https://www.mdpi.com/2075-4701/13/2/201laser cuttingfatigue behaviormelt adhesionresolidified materialdetachmentnotch |
| spellingShingle | André T. Zeuner Thomas Wanski Sebastian Schettler Jonas Fell Andreas Wetzig Robert Kühne Sarah C. L. Fischer Martina Zimmermann Influence of a Pronounced Pre-Deformation on the Attachment of Melt Droplets and the Fatigue Behavior of Laser-Cut AISI 304 Metals laser cutting fatigue behavior melt adhesion resolidified material detachment notch |
| title | Influence of a Pronounced Pre-Deformation on the Attachment of Melt Droplets and the Fatigue Behavior of Laser-Cut AISI 304 |
| title_full | Influence of a Pronounced Pre-Deformation on the Attachment of Melt Droplets and the Fatigue Behavior of Laser-Cut AISI 304 |
| title_fullStr | Influence of a Pronounced Pre-Deformation on the Attachment of Melt Droplets and the Fatigue Behavior of Laser-Cut AISI 304 |
| title_full_unstemmed | Influence of a Pronounced Pre-Deformation on the Attachment of Melt Droplets and the Fatigue Behavior of Laser-Cut AISI 304 |
| title_short | Influence of a Pronounced Pre-Deformation on the Attachment of Melt Droplets and the Fatigue Behavior of Laser-Cut AISI 304 |
| title_sort | influence of a pronounced pre deformation on the attachment of melt droplets and the fatigue behavior of laser cut aisi 304 |
| topic | laser cutting fatigue behavior melt adhesion resolidified material detachment notch |
| url | https://www.mdpi.com/2075-4701/13/2/201 |
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