CORROSION RESISTANT NEUTRON ABSORBING STEEL Russian patent published in 2023 - IPC C22C38/54 C22C38/50 C22C38/46 

FIELD: metallurgy.

SUBSTANCE: invention is related to corrosion-resistant neutron-absorbing steels used in nuclear power engineering, in particular, in manufacturing of racks for compact fuel storage of sheath tube neutron absorbers in devices for transporting and storing nuclear fuel. The steel contains components in the following ratio, in wt.%: carbon 0.025-0.15, silicon 0.1-0.6, manganese 0.1-0.6, chromium 15.0-17.0, boron B-10 0 .4-0.9, vanadium 0.05-0.35, nickel 11.0-14.0, REM 0.001-0.025, zirconium 4.0-6.0, aluminium 0.15-0.80, gadolinium 1.8-2.5, calcium 0.005-0.02, titanium 0.8-1.7, nitrogen 0.005-0.012, barium 0.005-0.025, iron and impurities - the rest.

EFFECT: steel has improved hot workability, weldability and corrosion resistance, while being able to be used for manufacturing of devices for transportation and storage of enriched nuclear fuel with a U-235 content of 8.0 wt.% or more.

3 cl