Abstract
The peculiarities of the interaction of hydrogen with low-carbon steels were studied by the magnetoacoustic emission method (MAE). It was established that the low concentration of hydrogen in the steel structure has an insignificant effect on their elastic characteristics. Hydrogen in the steel structure contributes to the increase of MAE by 16% under the induction of a magnetic field of 0.92 T, and for plastically deformed steel, the presence of hydrogen contributes to the increase of MAE by 23% compared to non-hydrogenated material. The less carbon in the steel, the greater the influence of hydrogen on MAE. The dualistic nature of the effect of low hydrogen concentration on the generation of MAE is illustrated: increase of MAE activity up to a certain concentration of hydrogen, and then its decrease. It is important to take this into account when developing methods for non-destructive control of the local concentration of hydrogen in metals.
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