Induced nuclear reactions: processes – systems – and elements – Fuel component structure
Patent
1997-08-28
1998-11-10
Jordan, Charles
Induced nuclear reactions: processes, systems, and elements
Fuel component structure
376416, 376457, 148672, 420422, G21C 307, C22C 1600
Patent
active
058355502
ABSTRACT:
A process for fabricating nuclear fuel rod cladding tube comprising beta quenching a zirconium alloy billet consisting essentially of 0.3 to 1.8 weight percent tin, 0.1 to 0.65 weight percent iron, the balance of the alloy being essentially nuclear grade zirconium with incidental impurities by heating to a temperature in the beta range greater than about 1000.degree. C. and rapidly quenching the billet to a temperature below the .alpha. plus .beta. to a transformation temperature to form a martensitic structure; extruding the beta-quenched billet at a temperature between 600.degree. and 750.degree. C. to form a hollow; annealing the hollow by heating at a temperature up to about 700.degree. C.; pilgering the annealed hollow; and final annealing the pilgered annealed hollow to a temperature up to about 700.degree. C. to form the nuclear fuel rod cladding tube comprising the alloy having a microstructure of Zr.sub.3 Fe 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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