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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.:

US 6322643 B1

PDFFull Text
Date of Patent:
Nov. 27, 2001

Filed:

Nov. 16, 1999

Columnar crystalline ni-base heat-resistant alloy having high resistance to intergranular corrosion at high temperature, method of producing the alloy, large-size article, and method of producing large-size article from the alloy

Applicant:
Inventors:

Akira Mitsuhashi, Omiya, JP;

Michi Misumi, Omiya, JP;

Saburou Wakita, Omiya, JP;

Hisataka Kawai, Takasago, JP;

Kouji Takahashi, Takasago, JP;

Ikuo Okada, Takasago, JP;

Assignee:

Other;

Attorney:

Oblon, Spivak, McClelland, Maier & Neustadt, P.C.

Primary Examiner:

Roy King

Assistant Examiner:

Nicole Coy

Int. Cl.
CPC ...
C22C 1/905 ; C22F 1/10 ;
U.S. Cl.
CPC ...
C22C 1/905 ; C22F 1/10 ;
Abstract

An Ni-base heat resistant alloy, has a composition which contains, by weight, Cr: from 12.0 to 14.3%, Co: from 8.5 to 11.0%, Mo: from 1.0 to 3.5%, W: from 3.5 to 6.2%, Ta: from 3.0 to 5.5%, Al: from 3.5 to 4.5%, Ti: from 2.0 to 3.2%, C: from 0.04 to 0.12%, B: from 0.005 to 0.05%, and the balance substantially Ni and inevitable impurities. A large-size casting, as well as a large-size turbine blade, having a columnar crystalline Ni-base heat-resistant alloy formed from the Ni-base heat-resistant alloy, have sound cast surfaces and a sound internal structure.

Find Patent Forward Citations

Mitsuhashi, Akira. (2001). Columnar crystalline ni-base heat-resistant alloy having high resistance to intergranular corrosion at high temperature, method of producing the alloy, large-size article, and method of producing large-size article from the alloy (U.S. Patent No. 6322643). U.S. Patent and Trademark Office. https://idiyas.com/patent/badge/6322643

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