engleski

Hydrogen Diffusion in Structural Steels

In this work hydrogen permeation measurements were performed with three low-alloyed structural steels aimed at different purposes. The influence of microstructure on the behaviour of metal in interaction with hydrogen was studied, as it is known that sudden cracking of steel constructions are often the consequence of hydrogen resulting from metal's corrosion. Transport properties of absorbed hydrogen were investigated by laboratory permeation technique with steel membrane between hydrogen entry side and hydrogen exit side. H-permeation values obtained are interpreted based on the trapping theory of HIC. It was shown that steels having the microstructure with more effective traps both delay hydrogen diffusion through steel and reduce the permeation rate of hydrogen atoms.

structural steels; microstructural heterogeneities; hydrogen diffusion; hydrogen traps; hydrogen embrittlement

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