ON THE INFLUENCE OF SPECIMEN ORIENTATION ON THE DUCTILE FRACTURE BEHAVIOUR OF THE STEEL Fe E 350

For 125 mm thick plate Fe E 350 tests were carried out with notched and smooth round bars, flat tensile bars, Charpy - V-notch and CT-specimens in the L-T, T-L, and S-L orientation. The decrease in fracture properties is due to lamellar tearing characterized by sulfide accumulated terraces influencing the stress state at the crack tip and the void formation in the fracture surface.