FIELD: metallurgy.
SUBSTANCE: welded assembly of fuel element comprises a jacket and a plug with collar made of high-chromium steel, connected by weld seam obtained by argon-arc welding.
EFFECT: increased reliability of sealing of the nuclear fuel elements due to obtaining of the high-quality welded joint of the jacket with plug without subsequent heat treatment of the weld seam, is achieved by forming of the ferritic phase in the weld metal by changing the design of the jacket-plug connection made of steel of ferritic-martensitic and ferritic classes in various combinations in accordance with required sizes of the assembly and weld seam elements.
4 cl, 4 dwg, 1 tbl, 4 ex
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