Fuel element for a fast neutron reactor (variants) and a cladding for the production thereof

• Main Authors: SOLONIN MIKHAIL IVANOVICH, IOLTUKHOVSKY ALEXANDR GRIGORIE, FORSTMAN VLADIMIR ALEXANDROVIC, SHKABURA IGOR ALEXEEVICH, TSEVELEV VALENTIN VLADIMIROVIC, IVANOV JURY ALEXANDROVICH, SHAMARDIN VALENTIN KUZMICH, VATULIN ALEXANDR VIKTOROVICH, LEONTIEVA-SMIRNOVA MARIA VLADI, GOLOVANOV VIKTOR NIKOLAEYICH, BULANOVA TATYANA MIKHAILOVNA
• Format: Patent
• Language: Chinese; English
• Published: 21.07.2010
• Subjects: ALLOYS; CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUSMETALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHERTREATMENTS; METALLURGY; METALLURGY OF IRON; MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; NUCLEAR ENGINEERING; NUCLEAR PHYSICS; NUCLEAR POWER PLANT; NUCLEAR REACTORS; PHYSICS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to nuclear engineering. The inventive fuel element for a fast neutron reactor is characterised in that the cladding thereof is made of a martensite-ferrite steel. The structure of said steel consists of at least two areas through the height of the cladding, i.e. the steel structure provides a high heat resistance in the upper area and a high low-temperature radiation embrittlement resistance in the lower area of said cladding. Said steel has the following component ratio: 0.10-0.21 mass % C, 0.1-0.8 mass % Si, 0.5-2.0 mass % Mn, 10.0-13.5 mass % Cr 0.8-2.5 mass % W, 0.05-0.4 mass % V, 0.05-0.4 mass % Ti, 0.001-008 mass % B, 0.001-0.01 mass % Ce and/or Yt in total, 0.05-0.2 mass % Zr, 0.05-0.2 mass % Ta, and 0.02-0.15 mass % N the rest, being Fe at a ratio between a total V, Ti, Zr and Ta content and a total C and N content ranging from 2 to 9. Said invention makes it possible to develop a fuel element and a cladding for the production thereof made of the steel which exhibits a low level