Title:
タービンエンジン部品用ニッケル合金
Document Type and Number:
Japanese Patent JP4026883
Kind Code:
B2
Abstract:
A new nickel base superalloy suitable for compressor or turbine discs of gas turbine engines with fatigue crack propagation resistance equal to Waspaloy, tensile strength higher than Waspaloy and higher operating temperature than Waspaloy or UDIMET 720 family of alloys. The nickel base superalloy has a preferred composition by weight % of 14.0-19.0% cobalt, 14.35 - 15.15 Chromium, 4.25 - 5.25 Molybdenum, 1.35 - 2.15 tantalum, 3.45 - 4.15 titanium, 2.85 - 3.15 aluminium, 0.01 - 0.025 boron, 0.012- 0.033 carbon, 0.05 - 0.07 zirconium, 0.5 - 1.0 hafnium, up to 1.0 rhenium, up to 2.0 tungsten, less than 0.5 niobium, up to 0.1 yttrium, up to 0.1 vanadium, up to 1.0 iron, up to 0.2 silicon, up to 0.15 manganese and balance nickel plus incidental impurities.
Inventors:
Stephen John Hessel
Wayne Voice
Alistair William James
Salah Ann Blackham
Colin John Small
Michael Ronald Winston
Wayne Voice
Alistair William James
Salah Ann Blackham
Colin John Small
Michael Ronald Winston
Application Number:
JP10714997A
Publication Date:
December 26, 2007
Filing Date:
April 24, 1997
Export Citation:
Assignee:
ROLLS-ROYCE PUBLIC LIMITED COMPANY
International Classes:
C22C19/05
Domestic Patent References:
| JP1205059A |
Attorney, Agent or Firm:
Kazuo Shamoto
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita
Tadashi Masui
Yasushi Kobayashi
Akio Chiba
Hiroyuki Tomita