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:
Aug. 20, 2013
Filed:
Aug. 10, 2007
Shinya Imano, Hitachi, JP;
Hirotsugu Kawanaka, Hitachi, JP;
Hiroyuki Doi, Tokai, JP;
Tatsuya Takahashi, Muroran, JP;
Tsukasa Azuma, Muroran, JP;
Koji Kajikawa, Muroran, JP;
Shinya Imano, Hitachi, JP;
Hirotsugu Kawanaka, Hitachi, JP;
Hiroyuki Doi, Tokai, JP;
Tatsuya Takahashi, Muroran, JP;
Tsukasa Azuma, Muroran, JP;
Koji Kajikawa, Muroran, JP;
Hitachi, Ltd., Tokyo, JP;
The Japan Steel Works, Ltd., Tokyo, JP;
Abstract
An Ni—Fe based superalloy forging material including 30 to 40 wt % of Fe, 14 to 16 wt % of Cr, 1.2 to 1.7 wt % of Ti, 1.1 to 1.5 wt % of Al, 1.9 to 2.2 wt % of Nb, 0.05 wt % or less of C and the remainder of Ni and inevitable impurities is solution-treated and aged, and thereby γ' phase (NiAl) having an initial mean particle size of about 50 to about 100 nm is precipitated. This superalloy is excellent in high-temperature strength and high-temperature ductility and can produce a large forged product of 10 ton or more. Therefore, this material is suitable for use as the material of a steam turbine rotor having a main steam temperature of 650° C. or more.
Data source: USPTO (United States Patent and Trademark Office) public patent records. Weekly synchronization. How IDiyas builds this profile