Hydrogen permeation behaviour and associated phase transformations in annealed AISI304 stainless steels

摘要: The effective diffusion coefficient and subsurface concentration of hydrogen in annealed AISI304 austenitic stainless steels have been measured by the electrochemical permeation method. effects different cathodic current densities on coefficient, beneath surface steady state density studied. value for permeated specimens increases with increasing charging density. first increase density, then decrease X-ray diffraction analyses were used to investigate phase transformation during charging. results revealed that resulted formation a considerable amount e α′ martensites, which will time.