Metal treatment – Compositions – Heat treating
Patent
1985-08-02
1988-01-05
Brody, Christopher W.
Metal treatment
Compositions
Heat treating
148133, C21D 100
Patent
active
047174285
ABSTRACT:
Processes for the rapid alpha annealing of zirconium based articles are described. These processes utilize induction heating to rapidly heat a worked zirconium based article to an elevated temperature after which it is then cooled. Time at the selected elevated temperature is less than about 1 second, and preferably essentially zero. Stress relieving of cold pilgered Zircaloy may be performed by induction heating to a temperature between about 540.degree. and about 650.degree. C. Partial recrystallization annealing of cold pilgered Zircaloy may be performed by induction heating to a temperature between about 650.degree. and about 760.degree. C. Full alpha recrystallization annealing of cold pilgered Zircaloy may be performed by induction heating to a temperature between about 760.degree. and about 900.degree. C.
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Cellier Francis
Comstock Robert J.
Jacobsen William A.
Sabol George P.
Brody Christopher W.
Stoltz R. A.
Westinghouse Electric Corp.
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