Metal treatment – Compositions – Heat treating
Patent
1985-08-02
1987-06-09
Brody, Christopher W.
Metal treatment
Compositions
Heat treating
148133, C22F 118
Patent
active
046718265
ABSTRACT:
A zirconium alloy fuel cladding tube is provided, having a uniform composition throughout and an outer annular microstructural layer in a cold worked and stress relieved condition over an inner annular microstructural layer in an essentially fully recrystallized condition.
Also described is a method of producing this tubing. This method utilizes an intermediate annealing step in which cold worked tubing is nonuniformly annealed to produce an outer annular layer of essentially fully recrystallized material over an inner layer of cold worked and stress relieved material. Subsequently the nonuniformly annealed material is cold worked and then uniformly annealed to produce the fuel cladding tube described above.
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Brody Christopher W.
Satina D. M.
Westinghouse Electric Corp.
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