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Primary Examiner: Rutledge, L. Dewayne
Assistant Examiner: Skiff, Peter K.
Attorney: MaLossi; Leo I., Davis, Jr.; James C.

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Title: Zirconium-base alloy structural component for nuclear reactor and method

Abstract: A small amount of lanthanum and praseodymium will substantially improve the slow strain rate ductility of certain zirconium-base alloys and these new alloys and certain other zirconium-base alloys in the irradiated condition can under certain circumstances have surprising load-carrying capacity and service life. Such other alloys contain yttrium or calcium instead of lanthanum or praseodymium.


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Inventors: Hanneman, Rodney E. (Burnt Hills, NY, US)
Lee, Daeyong (Scotia, NY, US)
Tedmon, Jr., Craig S. (Scotia, NY, US)

Application Number: 934948
Filing Date: 1978-08-18
Publication_date: 1980-04-08
Assignee: General Electric Company (Schenectady, NY)
Primary Class(es): 148/672 148/421, 376/457, 376/900, 420/422
Other Classes:
US Patent Ref:
2894866Jul, 1959Picklesimes148/133.
3005706Oct, 1961Thomas et al.75/177.
3125446Mar, 1964Johnson et al.75/177.
3150972Sep, 1964Rosler75/177.
3261682Jul, 1966Rosler75/177.
3865635Feb, 1975Hofvenstam148/11.

Other Refs: 859053
Dec, 1970CA
Other References: Goodwin, "Bettis Technical Review," WAPD-BT-6, Jan. 1958, Reactor Metallurgy, pp. 39-47.
Chirigos et al., "Development of Zircaloy 4, Proceedings of a Symposium," Vienna, May 1960, vol. 1, pp. 19, 24, 32, 38, 40, 41, 44, 45, 52 & 53.
"The Corrosion of LWBR Zircaloy End Cap Weldments," AEC Contract Report AT-11-1-GEN-14, Feb. 1973, WAPD-TM-1972, Abstract, pp. 7, 9 & 24.
Welding Research Supplement, Jan. 1956, pp. 27s to 31s.