Induced nuclear reactions: processes – systems – and elements – Fuel component structure – Encased with nonfuel component
Patent
1997-08-01
1998-11-17
Jordan, Charles
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
Encased with nonfuel component
376409, 376457, 148672, 420422, G21C 320, C22C 1600
Patent
active
058387536
ABSTRACT:
A process for fabricating nuclear fuel rod cladding tube comprising beta quenching a zirconium alloy billet consisting essentially of from 0.5 to 3.25 weight percent niobium, from 0.3 to 1.8 weight percent tin, the balance of the alloy being essentially nuclear grade zirconium with incidental impurities by heating to a temperature in the beta range above 950.degree. C. and rapidly quenching the billet to a temperature below the .alpha. plus .beta. to .alpha. transformation temperature to form a martensitic structure; extruding the beta-quenched billet at a temperature below 600.degree. C. to form a hollow; annealing the hollow by heating at a temperature up to 590.degree. C.; pilgering the annealed hollow; and final annealing the pilgered annealed hollow to a temperature up to 590.degree. C. to form the nuclear fuel rod cladding tube comprising the alloy having a microstructure of beta niobium second phase precipitates distributed uniformly intragranularly and intergranularly forming radiation resistant second phase precipitates in the alloy matrix.
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Garzarolli Friedrich
Ruhmann Heinrich
Van Swam Leonard F. P.
Jordan Charles
Lattig M. J.
Siemens Power Corporation
Zebrak Ira Lee
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