Imitation modelling in metallography

A brief review of investigations made in the Institute of Metallography at the Bulgarian Academy of Sciences applying modern imitation methods is presented. Radiation damage in metals and alloys after ion implantation, H2 or He glow discharge exposure and electrolytic hydrogenation has been used to study crystal lattice changes and their effect on physical properties. Surface modification of steel samples of various composition have been studied. An apparatus for quantitative H2 determination has been constructed and methods for measurement of H2 permeability and H2 diffusion coefficients in metal alloys have been proposed. The correlation between H2 concentration, mechanical characteristics and physical properties of construction steel samples has been studied