Global and high-resolution damage quantification in dual-phase steel bending samples with varying stress states

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dc.contributor.authorMeya, Rickmer
dc.contributor.authorKusche, Carl F.
dc.contributor.authorLöbbe, Christian
dc.contributor.authorAl-Samman, Talal
dc.contributor.authorKorte-Kerzel, Sandra
dc.contributor.authorTekkaya, A. Erman
dc.date.accessioned2019-10-08T10:17:13Z
dc.date.available2019-10-08T10:17:13Z
dc.date.issued2019-03-12
dc.description.abstractIn a variety of modern, multi-phase steels, damage evolves during plastic deformation in the form of the nucleation, growth and coalescence of voids in the microstructure. These microscopic sites play a vital role in the evolution of the materials’ mechanical properties, and therefore the later performance of bent products, even without having yet led to macroscopic cracking. However, the characterization and quantification of these diminutive sites is complex and time-consuming, especially when areas large enough to be statistically relevant for a complete bent product are considered. Here, we propose two possible solutions to this problem: an advanced, SEM-based method for high-resolution, large-area imaging, and an integral approach for calculating the overall void volume fraction by means of density measurement. These are applied for two bending processes, conventional air bending and radial stress superposed bending (RSS bending), to investigate and compare the strain- and stress-state dependent void evolution. RSS bending reduces the stress triaxiality during forming, which is found to diminish the overall formation of damage sites and their growth by the complimentary characterization approaches of high-resolution SEM and global density measurements.en
dc.identifier.urihttp://hdl.handle.net/2003/38274
dc.identifier.urihttp://dx.doi.org/10.17877/DE290R-20244
dc.language.isoende
dc.relation.ispartofseriesMetals;9(3)
dc.rights.urihttps://creativecommons.org/licenses/by/4.0/
dc.subjectDamageen
dc.subjectCharacterizationen
dc.subjectAutomated void recognitionen
dc.subjectDensityen
dc.subjectBendingen
dc.subjectStress superpositionen
dc.subject.ddc620
dc.subject.ddc670
dc.subject.rswkWerkstoffschädigungde
dc.subject.rswkWerkstoffprüfungde
dc.subject.rswkAutomatisches Prüfende
dc.subject.rswkLufteinschlussde
dc.subject.rswkDichtebestimmungde
dc.subject.rswkRasterelektrochemisches Mikroskopde
dc.subject.rswkBiegende
dc.subject.rswkSpannungsumlagerungde
dc.titleGlobal and high-resolution damage quantification in dual-phase steel bending samples with varying stress statesen
dc.typeTextde
dc.type.publicationtypearticlede
dcterms.accessRightsopen access
eldorado.secondarypublicationtruede
eldorado.secondarypublication.primarycitationMeya, R.; Kusche, C.F.; Löbbe, C.; Al-Samman, T.; Korte-Kerzel, S.; Tekkaya, A.E. Global and High-Resolution Damage Quantification in Dual-Phase Steel Bending Samples with Varying Stress States. Metals 2019, 9, 319.de
eldorado.secondarypublication.primaryidentifierdoi:10.3390/met9030319de

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