It was shown that plastic deformation of a 36%Mn alloy produced a 25-fold increase in the H permeability, a 5-fold increase in the activation energy for H diffusion, and a 10-fold increase in the pre-exponential factor. A marked (95%) recovery of the permeability occurred during annealing at temperatures about 300C, where a recovery of the electrical conductivity was also observed. These facts, combined with microhardness and X-ray diffraction results, indicated that the H permeability of a deformed 36%Mn alloy was more sensitive to point defects and free dislocations than to dislocation arrays that formed during the formation and annihilation of dislocations.

E.S.Kodes, P.V.Geld, V.A.Goltsov: Fizika Metallov i Metallovedenie, 1967, 24[3], 528-34