Metal treatment – Compositions – Heat treating
Patent
1980-06-30
1982-11-23
Skiff, Peter K.
Metal treatment
Compositions
Heat treating
148 127B, 148133, 376900, C21D 100, C22F 118
Patent
active
043603890
ABSTRACT:
Zirconium-base alloy channels, fuel cladding tubes and other nuclear reactor structural components having unique resistance to accelerated pustular corrosion in the boiling water reactor environment are produced by a sequence of heat treatments causing segregation of intermetallic particulate precipitate phase in two dimensional arrays of particles of diameter from 100 to 400 Angstroms located along grain boundaries and sub-grain boundaries throughout the alloy body.
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patent: 3804708 (1974-04-01), Nilson
patent: 3865635 (1975-02-01), Hofvenstam et al.
patent: 4219372 (1980-08-01), Fang
patent: 4238251 (1980-12-01), Williams et al.
Chirigos et al., "Development of Zircaloy-4", Fuel Element Fabrication, Symposium, Vienna, May 10-13, 1963, pp. 19-53.
Ostberg et al., "Structure Transformations in Zircaloy-2 During Hot Working Processes, Journal of Nuclear Materials, 5 (No. 1), 1962, pp. 120-127.
"Structure and Properties of Zirconium Alloys" by Ivanov et al. [Proceedings of the Second United Nations International Conference on the Peaceful Uses of Atomic Energy, Geneva, Sep. 1-13, 1958, pp. 45, 46].
Davis Jr. James C.
General Electric Company
MaLossi Leo I.
Skiff Peter K.
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