TY - CONF A1 - Sonntag, Nadja A1 - Skrotzki, Birgit A2 - Beck, T. A2 - Charkaluk, E. T1 - Imaging of potential crack initiation sites in ferritic steels by the Bitter method T2 - LCF8 Eighth International Conference on Low Cycle Fatigue N2 - It is widely known that the magnetic domain structure of stress-sensitive ferromagnetic materials may be altered by external or internal mechanical stresses due to magnetoelastic effects. In this contribution, localized magnetic domain changes arising from inhomogeneous deformation and multiaxial loading conditions are imaged by the Bitter method for the first time. It is demonstrated that these domain changes provide deformation-related information and thus, allow for the visualization of macroscopic strain gradients in fine-grained polycrystalline steels, while keeping a sufficient spatial resolution. This approach has been developed within the framework of BAM-MI-project “MICRONET”. PB - DVM Deutscher Verband für Materialforschung und -prüfung CY - Berlin, Germany T2 - LCF8 Eighth International Conference on Low Cycle Fatigue CY - Dresden, Germany DA - 27.06.2017 KW - Bitter method KW - Magnetic domains KW - Strain gradients PY - 2017 UR - https://opus4.kobv.de/opus4-bam/frontdoor/index/index/docId/40862 AN - OPUS4-40862 SN - 978-3-9814516-5-8 SP - 263 EP - 265 AD - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany