By using a permeation time-lag technique, a study was made of the permeation and diffusion of H through tensile-stressed cylinders of the steel (0.22C, 0.26Si, 0.54Mn). The results showed that the H diffusivity in the steel increased with increasing tensile stress.
I.Onishi, Y.Kikuta, T.Araki, T.Fujii: Yosetsu Gakkaishi, 1969, 32[2], 147-55