In this study, we used thermo–mechanical control process (TMCP) technique to investigate the
effect of arisen dislocation density and texture components on hydrogen induced cracking
susceptibility in as-received API X60 pipeline steel. Dislocations and texture components appeared
during cold rolling and annealing treatments. X-ray diffraction and electron backscatter diffraction
measurements were used to study these phenomena. We observed that the cold rolling and
annealing treatments produced higher dislocation density in deformed and recovered regions. The
increase of dislocation density also caused the increased hydrogen trap density. Macro-texture
studies by x-ray method indicates that initial weak texture of as-received X60 steel was changed
from f-fiber to c-fiber and h-fiber in 90% cold rolled and annealed specimen. Therefore, the number
of grains with h100ijjND orientation which had a harmful effect on hydrogen induced cracking
susceptibility increased. The {100} dominant texture and high density of hydrogen traps mitigated
against any possible benefits of the other microstructural parameters such as coincidence site lattice
boundaries and grain size. As a result, we could not consider this process as a suitable method to
increase hydrogen induced cracking resistance in pipeline steel.