engleski

Crystal lattice distortion in steel charged with cathodic hydrogen

Detrimental effects of hydrogen absorption and diffusion within the metal were traced by permeation technique, metallographic observations, and by X-ray diffraction measurements. The mechanical testing revealed that investigated coupons made from metallurgically clean, cathodically hydrogenated steel have low hydrogen embrittlement susceptibility, but metallography of charged specimens displayed characteristics internal stepwise cracks and surfaceblisters. It was shown that trapping of hydrogen at imperfections in steel matrix resulted in significant increase of residual stresses.

crystal lattice distortion; cathodic hydrogen; microstructure; hydrogen induced cracking

nije evidentirano