TY  - CONF
A1  - Sonntag, Nadja
T1  - Imaging of potential crack initiation sites in ferritic steels by the Bitter method
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”.
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
AN  - OPUS4-40863
LA  - eng
AD  - Bundesanstalt fuer Materialforschung und -pruefung (BAM), Berlin, Germany
ER  -