Investigation of the influence of a two-step process chain consisting of laser cutting and subsequent forming on the fatigue behavior of AISI 304

Wanski, Thomas; Zeuner, A.; Schöne, Sebastian; Herwig, Patrick; Mahrle, Achim; Wetzig, Andreas; Zimmermann, Martina

doi:10.1016/j.ijfatigue.2022.106779

Cited by 5 publications

(7 citation statements)

References 14 publications

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“…The deformed laser-cut edges were examined by light microscopy and are shown exemplarily in Figure 5 for the conditions as cut (a) and pre-deformed to 28% strain (b). Comparing the two figures, the detachment phenomenon, which has been described in past work [20], due to plastic pre-deformation was again evident at the lower sheet edge. Figures 6 and 7 show the results of the µ CT examination.…”

Section: Effect Of High Pre-strains On the Bonding Of Melt Droplets T...supporting

confidence: 70%

“…For fatigue testing, the specimen geometry in Figure 3 was used. For this purpose, a series of specimens with a deformation of 28% strain was investigated, as was done in a previous study [20]. A second series of specimens underwent a deformation of 44% strain, as did the specimens in the µ CT study.…”

Section: Fatigue Testingmentioning

confidence: 99%

“…However, pores edge act as crack initiation sites. Therea classical mechanical subtractive mating parameters and a subsequent pre-AISI 304 was investigated [20]. It was s, a pre-deformation can cause the deence on the fatigue strength achieved.…”

Section: Introductionmentioning

confidence: 99%

“…The result of this es. At this point, the question arises as plastic deformation significantly above ter all, significantly higher forming deby pre-deformation [20].…”

Section: Introductionmentioning

confidence: 99%

“…In a previous study, the influence of laser-cutting parameters and a subsequent predeformation on the fatigue behavior of laser-cut AISI 304 was investigated [20]. It was shown that depending on laser-cutting parameters, a pre-deformation can cause the detachment of melt droplets.…”

Section: Introductionmentioning

confidence: 99%

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Influence of a Pronounced Pre-Deformation on the Attachment of Melt Droplets and the Fatigue Behavior of Laser-Cut AISI 304

Zeuner

Wanski

Schettler

et al. 2023

Metals

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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.

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Section: Effect Of High Pre-strains On the Bonding Of Melt Droplets T...supporting

confidence: 70%

Section: Fatigue Testingmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

“…The result of this es. At this point, the question arises as plastic deformation significantly above ter all, significantly higher forming deby pre-deformation [20].…”

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 3 more Smart Citations