Filing Information

Inventor(s)	Erland M. Schulson · Donald J. Cameron ·
Assignee(s)	Atomic Energy of Canada Limited ·  View assignee updates
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 Code	A
International Classifications	14832;32.5;133;11.5 F;12.3 ·
Related U.S. Application Data	CROSS-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 ·

Patent Family

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.