| 摘要 |
PROBLEM TO BE SOLVED: To provide a nickel-base superalloy which is excellent in temperature capability and flow stress capability by adding cobalt of a high level and titanium, and to provide a gas turbine engine component using the alloy. SOLUTION: The nickel-base superalloy consists of 20 to 40 wt.% cobalt, 10 to 15 wt.% chromium, 3 to 6 wt.% molybdenum, 0 to 5 wt.% tungsten, 2.5 to 4 wt.% aluminum, 3.4 to 5 wt.% titanium, 1.35 to 2.5 wt.% tantalum, 0 to 2 wt.% niobium, 0.5 to 1 wt.% hafnium, 0 to 0.1 wt.% zirconium, 0.01 to 0.05 wt.% carbon, 0.01 to 0.05 wt.% boron, and 0 to 2 wt.% silicon, and the remainder is nickel and incidental impurities. Its gamma prime phase includes (Ni/Co)<SB>3</SB>(Al/Ti/Ta). COPYRIGHT: (C)2009,JPO&INPIT
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