The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
May. 02, 1978
Filed:
Apr. 15, 1977
Applicant:
Inventors:
John S Dunning, Corvallis, OR (US);
Mark I Copeland, Corvallis, OR (US);
John S Howe, Albany, OR (US);
Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
C21D / ;
U.S. Cl.
CPC ...
148-3 ; 148142 ;
Abstract
A strengthened creep resistant ferritic iron alloy is provided by alloying the iron with two or more alloying metals of the type that form an intermediate Laves phase in the alloy having the composition Fe.sub.2 X, where X is the alloying metal. One of the alloying metals comprises one to five weight percent of tantalum and/or columbium while the other metal comprises one to eight weight percent of molybdenum and/or tungsten. The total of the Laves phase forming alloying metals is no more than ten weight percent in excess of that necessary to react with interstitial elements that may be added to the alloy.