Analysis of Shear Localization in High-Speed Blanking of Press-Hardened 22MnB5 Steel

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dc.contributor.authorSchrage, O.
dc.contributor.authorDardaei Joghan, H.
dc.contributor.authorHahn, M.
dc.contributor.authorTekkaya, A. E.
dc.contributor.authorKorkolis, Y. P.
dc.date.accessioned2025-09-16T17:42:00Z
dc.date.available2025-09-16T17:42:00Z
dc.date.issued2025-08-26
dc.description.abstractHigh-speed blanking induces a shear localization in high-strength steels, improving the quality of the blanked edge in terms of geometrical shape, separation surface roughness, and shear-influenced zone close to the cut edge. High-speed blanking experiments with a 20 mm punch diameter and 8 m/s velocity of 2 mm thick 22MnB5-sheets (ultimate tensile strength of 1550 MPa) utilizing a relative clearance of 2.5 % are carried out. Two types of shear bands are observed in the post-process: A 'deformation shear band,' characterized by elongated grains in shear direction, is distinguished from a ‘transformation shear band’ with a change in microstructure appearing as a white layer in optical microscopy. Previous investigations by transmission electron microscopy showed that this white layer consists of nanosized grains in 22MnB5 material. Light microscopic images show that the transfor mation shear band width varies over the sheet thickness. Independent of the occurrence of a transformation shear band, a localization with a width of less than 20 µm is observed along the blanked edge. Fractographic analysis by scanning electron microscopy shows no evi dence of brittle fracture. Characteristic areas of the separation surfaces coincide with the observed two types of shear bands at the blanked edgeen
dc.identifier.urihttp://hdl.handle.net/2003/43929
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-25697
dc.language.isoen
dc.relation.ispartof10th International Conference on High Speed Formingen
dc.subjectHigh-speed blankingen
dc.subjectMicrostructureen
dc.subjectHigh-strength steelsen
dc.subjectShear localizationen
dc.subject.ddc620
dc.subject.ddc670
dc.subject.rswkMangan-Bor-Stahl
dc.subject.rswkStanzen
dc.subject.rswkFormhärten
dc.subject.rswkScherung
dc.subject.rswkFraktographie
dc.subject.rswkZerstörungsfreie Werkstoffprüfung
dc.subject.rswkRasterelektronenmikroskop
dc.subject.rswkMikrostruktur
dc.titleAnalysis of Shear Localization in High-Speed Blanking of Press-Hardened 22MnB5 Steelen
dc.typeText
dc.type.publicationtypeConferencePaper
dcterms.accessRightsopen access
eldorado.dnb.deposittrue
eldorado.secondarypublicationfalse

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