Effects of hydrogen on dislocation morphology in spheroidized steel

Abstract The effects of hydrogen on development of dislocation morphology in plastically deformed spheroidized steel was investigated. The presence of internal hydrogen leads to strain localization in the form of dense dislocation structure emanating from carbide particles. The strain localization “tail” is evolved through interaction of three different dislocation systems and lies along the pure shear direction. Micro-autoradiography results have shown that the strain localization “strain” is a a strong trap for hydrogen.