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:
Dec. 06, 2016
Filed:
Jun. 10, 2014
Applicant:
Mitsubishi Hitachi Power Systems, Ltd., Kanagawa, JP;
Inventors:
Assignee:
Mitsubishi Hitachi Power Systems, Ltd., Yokohama-shi, JP;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
C22C 19/05 (2006.01); F01D 5/28 (2006.01); C22B 9/18 (2006.01); C22B 9/20 (2006.01); F01D 25/00 (2006.01);
U.S. Cl.
CPC ...
F01D 5/28 (2013.01); C22B 9/18 (2013.01); C22B 9/20 (2013.01); C22C 19/05 (2013.01); C22C 19/056 (2013.01); F01D 25/005 (2013.01); F05D 2250/80 (2013.01); F05D 2300/17 (2013.01); Y02T 50/671 (2013.01);
Abstract
The Ni based forged alloy has a composition containing, on the basis of mass percent, Al: 0.5 to 1.0%, Cr: 17 to 21%, Fe: 17 to 19%, Nb: 4.5 to 5.5%, Ti: 0.8 to 1.3%, W: 3.0 to 6.0%, B: 0.001 to 0.03%, C: 0.001 to 0.015%, and Mo: 1.0% or less, the balance being Ni and inevitable impurities. The alloy includes carbide grains of the contained elements. The carbide grains have an average grain diameter of 20 μm or less. Thus, a Ni based forged alloy is provided which is excellent in high-temperature fatigue property and has a moderate macrosegregation property.