Possibility of estimating hydrogen corrosion in steel using Barkhausen effect

Potentialities of the method of the Barkhausen effect to determine the availability and degree of development of hydrogen corrosion in the structural steels St. 10 and 12MKh have been investigated. Results are presented. Dependences of mechanical characteristics and relative change of stress of the Barkhausen noises on the exposure time in the hydrogen atmosphere at high temperatures and pressures are presented. A conclusion is made on the applicability of the mentioned method for the proximate estimation of the duration of the hydrogen corrosion incubation period. It is shown possible to increase the method sensitivity to changes in steel as a result of hydrogen corrosion using harmonic analysis of the Barkhausen envelope