Hydrogen induced cracking (HIC) behaviour was investigated in three layers of RDeND
plane. HIC test showed that all cracks initiated from the mid-thickness of the RDeND plane
and propagated in the rolling direction of the steel plate. Hydrogen permeation test results
showed a lower permeability and diffusivity coefficient for the third layer resulting in the
highest density of traps and consequently HIC susceptibility. Considering the HIC test and
crystallographic texture measurements, cracks initiated from the grain boundaries associated with {100} grain orientation and arrested in regions with some strong texture
components, such as {110}//ND, {112}//ND, and possibly {332}//ND. The role of HABs and
CSLs boundaries was important in crack propagation.