Zirconium based alloy plate of low irradiation growth, method of

Details Zirconium based alloy plate of low irradiation growth, method of Zirconium based alloy plate of low irradiation growth, method of

1991-11-27

1993-06-29

Walsh, Donald P.

Induced nuclear reactions: processes, systems, and elements

Grids

376438, 376445, G21C 334

Patent

active

052232115

ABSTRACT:
A zirconium based alloy plate of low irradiation growth, containing not more than 5 wt % Sn and/or not more 5 wt % Nb, and the balance Zr of not less than 90 wt %. The alloy plate has a texture that <0001> orientation (Fr value) with respect to direction perpendicular to the surface of the plate ranges from 0.20 to 0.50. This alloy plate is effective in being used to form a fuel channel box. Also a fuel assembly using this channel box is provided in which the crystal orientation of the zirconium alloy is made random by a heat treatment. Specifically, by the heat treatment, the Fr, Ft, and Fl values thereof are set to 0.25 to 0.50, 0.25 to 0.36, and 0.25 to 0.36, respectively.

REFERENCES:
patent: 4000013 (1976-12-01), MacEwen et al.
patent: 4172742 (1979-10-01), Rowcliffe et al.
patent: 4452648 (1984-06-01), Cheadle et al.
patent: 4678632 (1987-07-01), Ferrari
patent: 4990305 (1991-02-01), Foster et al.
Japanese Patent Examined Publication No. 60-44387 (U.S. Pat. No. 4,238,251).

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