Metal treatment – Process of modifying or maintaining internal physical... – Producing or treating layered – bonded – welded – or...
Patent
1992-07-15
1994-04-19
Wyszomierski, George
Metal treatment
Process of modifying or maintaining internal physical...
Producing or treating layered, bonded, welded, or...
148521, 148668, 148672, 156656, 156664, 2041291, C23F 102
Patent
active
053042611
ABSTRACT:
In a method of fabricating a channel box for use in a nuclear reactor, Zr-alloy sheet material is formed into a tubular channel box. The method includes solution heat treatment of the Zr-alloy sheet material including quenching from a temperature at which .beta.-phase is present. After the solution heat treatment, portions of the Zr-alloy sheet are thinned relative to other portions by a non-stressing thinning process, such as chemical etching in a bath. The corrosion resistance imparted by heat treatment is retained, and the heat treatment itself is easily performed on material of uniform thickness.
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Hirakawa Hiromasa
Inagaki Masahisa
Ishizaki Hideaki
Maki Hideo
Matsumoto Kouichi
Hitachi , Ltd.
Wyszomierski George
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