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. 14, 2002
Filed:
Nov. 03, 2000
Applicant:
Inventors:
William J. Bishop, Amherst, OH (US);
Noel M. Brady, University Heights, OH (US);
Walter R. Cribb, Solon, OH (US);
Anatoly A. Offengenden, Amherst, OH (US);
Assignee:
Brush Wellman, Inc., Cleveland, OH (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22F 1/08 ;
U.S. Cl.
CPC ...
C22F 1/08 ;
Abstract
Large sections of solution annealed, precipitation hardenable alloys which are resistant to internal cracking yet fully hardenable can be produced if, during rapid quenching, the temperature of the section is allowed to stabilize immediately above the alloy's solvus temperature before the section is rapidly quenched. Preferably, the temperature of the section is allowed to stabilize a second time, this time at an elevated temperature not so high that significant phase changes occur, before the section is cooled to ambient.