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. 01, 1987
Filed:
Jan. 02, 1986
Toshio Yonezawa, Takasago, JP;
Nobuya Sasaguri, Takasago, JP;
Kichiro Onimura, Takasago, JP;
Hiroshi Susukida, Takasago, JP;
Katsuji Kawaguchi, Takasago, JP;
Hiroo Nagano, Kobeshi, JP;
Takao Minami, Amagasakishi, JP;
Kazuo Yamanaka, Monooshi, JP;
Yasutaka Okada, Narashi, JP;
Mamoru Inoue, Kobeshi, JP;
Mitsubishi Jukogyo Kabushiki Kaisha, Tokyo, JP;
Sumitomo Metal Industries, Ltd., Osaka, JP;
Abstract
A method for a thermal treatment of a nickel based alloy, characterized in that said nickel based alloy for a material which will be subjected to a high-temperature and high-pressure water or vapor comprises, in terms of % by weight, 58% or more of Ni, 25 to 35% of Cr, 0.003% or less of B, 0.012 to 0.035% of C, 1% or less of Mn, 0.5% or less of Si, 0.015% or less of P, 0.015% or less of S, and the residue of Fe and usual impurities; in a first thermal treatment process, said nickel based alloy is heated and retained at a temperature of T.degree. C. to (T+100).degree.C. and is cooled at a cooling rate of a furnace cooling rate or more; and in a second thermal treatment process, said nickel based alloy is then retained at a temperature of 600.degree. to 750.degree. C. and at a temperature within a sensitization recovery range for a period of 0.1 to 100 hours and is cooled at a cooling rate of said furnace cooling rate or more.