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US4226647: Heat-treated zirconium alloy product

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Filing Information

Inventor(s) Erland M. Schulson · Donald J. Cameron ·
Assignee(s) Atomic Energy of Canada Limited ·
Attorney/Agent(s) McClenahan; W. John ·
Primary Examiner Rutledge; L. Dewayne ·
Assistant Examiner Peter K. Skiff ·
Application Number US5914829
Filing date 06/12/1978
Issue date 10/07/1980
Predicted expiration date 10/07/1997
U.S. Classifications 148/421  · 420/422  · 148/672  · 976/DIG.29  · 976/DIG.44  ·
International Classifications C21D 102  ·
Kind CodeA
International Classifications 14832;32.5;133;11.5 F;12.3 ·
Related U.S. Application DataCROSS-REFERENCE TO RELATED APPLICATION
This application is a continuation-in-part of U.S. Ser. No. 711,744, filed Aug. 4, 1976, now U.S. Pat. No. 4,094,706, which in turn is a continuation-in-part of U.S. Ser. No. 465,654, filed Apr. 30, 1974, now abandoned.
Foreign Priority CA171070 - 05/11/1973 ·
14 Claims, No Drawings


Abstract

High tensile strength, creep and corrosion resistant zirconium alloys containing 7.0-10.0 wt % aluminum, 0-3 wt % in total of one or more elements selected from the group consisting of magnesium, tin, chromium, iron, carbon, silicon, yttrium, niobium, molybdenum and beryllium, the balance zirconium and incidental impurities, are produced by annealing cast alloys at a temperature below about 992.degree. C. for a period of time sufficient to produce alloys having a substantially continuous matrix of the ordered intermetallic compound Zr.sub.3 Al. The alloys may initially be hot worked at temperatures about 1000.degree. C., while in the .beta.Zr-Zr.sub.2 Al two phase region, prior to annealing. Preferred alloys contain 7.5-9.5 wt % aluminum, the balance zirconium and incidental impurities.

Independent Claims | See all claims (14)

  1. 1. A heat-treated, high tensile strength creep and corrosion resistant zirconium alloy containing 7.0-10.0 wt% aluminum, and 0-3.0 wt% of one or more elements selected from the group comprising magnesium, tin, chromium, iron, carbon, silicon, yttrium, niobium, molybdenum and beryllium, balance, zirconium and incidental impurities, having a substantially continuous matrix of the intermetallic compound Zr.sub.3 Al.
  2. 11. A corrosion resistant, structural element fabricated from an alloy containing 7.0-10.0 wt% Al, and 0-3.0 wt% of one or more elements selected from the group comprising magnesium, tin, chromium, iron, carbon, silicon, yttrium, niobium, molybdenum and beryllium, balance zirconium and incidental impurities, heat treated in the range from 700.degree. C.-950.degree. C. for a sufficient time to ensure a substantially continuous matrix of the intermetallic compound Zr.sub.3 Al.

References Cited

U.S. Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
US3125446 Johnson et al. Mar 1964
US4000013 Atomic Energy of Canada Limited MacEwen et al. Dec 1976
US4094706 Atomic Energy of Canada Limited Schulson et al. Jun 1978

Foreign Patent Documents

Document NumberAssigneesInventorsIssue/Pub Date
DE2422578ATOMIC ENERGY OF CANADA LTDNov 1974