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:
Jul. 07, 2015
Filed:
Aug. 03, 2012
Mark Christopher Hardy, Belper, GB;
Mark Christopher Hardy, Belper, GB;
ROLLS-ROYCE plc, London, GB;
Abstract
A nickel-base alloy having the following composition (in weight percent unless otherwise stated): Cr 13.7-17.5; Co 2.5-5.6; Fe 8.0-9.3; Si 0-0.6; Mn 0-0.95; Mo 0.5-2.3; W 2.7-3.0; Al 2.2-3.5; Nb 2.7-7.2; Ti 0-0.85; Ta 0-3.25; Hf 0.0-0.5; C 0.01-0.05; B 0.02-0.04; Zr 0.04-0.06; Mg 0.015-0.025; S<50 ppm; P<50 ppm; the balance being Ni and incidental impurities. The alloy has an improved combination of properties (principally resistance to surface environmental damage and dwell fatigue crack growth) compared with known alloys, and is intended to operate for prolonged periods of time above 700° C., and up to peak temperatures of 800° C.