45855 2018 eng 66,1 18 3 37 article Springer US New York 1 -- -- -- This study examines the relationship between the magnetic mesostructure with the microstructure of low carbon steel tungsten inert gas welds. Optical microscopy revealed variation in the microstructure of the parent material, in the heat affected and fusion zones, correlating with distinctive changes in the local magnetic stray fields measured with high spatial resolution giant magneto resistance sensors. In the vicinity of the heat affected zone high residual stresses were found using neutron diffraction. Notably, the gradients of von Mises stress and triaxial magnetic stray field modulus follow the same tendency transverse to the weld. In contrast, micro-X-ray fluorescence characterization indicated that local changes in element composition had no independent effect on magnetic stray fields. Journal of Nondestructive Evaluation 10.1007/s10921-018-0522-0 0195-9298 1573-4862 06.09.2018 Robert Stegemann Sandra Cabeza Matthias Pelkner Viktor Lyamkin Andreas Pittner Daniel Werner R. Wimpory M. Boin Marc Kreutzbruck Giovanni Bruno eng uncontrolled TIG-welding eng uncontrolled GMR sensors eng uncontrolled Magnetic stray field eng uncontrolled Neutron diffraction eng uncontrolled Residual stress eng uncontrolled Microstructure eng uncontrolled Low carbon steel Analytische Chemie Ingenieurwissenschaften und zugeordnete Tätigkeiten Verlagsliteratur Datei im Netzwerk der BAM verfügbar ("Closed Access")