Carbide forming special features and fracture mechanisms under the austenitic chromium-nickel 304 steel post-life ageing

Post-life ageing of austenitic chromium-nickel 304 steel elements of the fast neutrons reactor equipment was carried out at a temperature above the operating conditions. The change in the short-term mechanical properties of the material was investigated. The relationship between the change in impact strength, fracture mechanisms and the morphology of carbide precipitates was revealed.