Abstract
This paper evaluates the prospects for using chromium beryllides (CrBe 12 ) as a candidate material for the blades of steam turbines operating under supercritical steam conditions. A diffusion model of oxidation has been developed, taking into account the formation of a Cr 2 O 3 -enriched protective layer and its possible degradation due to cracking. It is shown that at a temperature of 600°C, chromium beryllides are characterized by a significantly lower oxide layer growth rate compared to ferritic-martensitic steels and titanium alloys, and a comparable or lower rate compared to nickel superalloys. It is assumed that the low density of CrBe 12 leads to a significant reduction in centrifugal stresses. The analysis conducted showed that CrBe 12 can be considered a promising candidate material for further research regarding components of nextgeneration steam turbine systems in a temperature range up to 650°C. However, the results obtained should be considered preliminary and require direct verification under ultra-superheated steam conditions, as well as through additional analysis of creep, fatigue, and thermal-cyclic resistance.