| 摘要 |
A nickel base superalloy suitable for the production of a large, crack-free nickel-base superalloy gas turbine bucket suitable for use in a large land-based utility gas turbine engine, comprising, by weight percents: Chromium 7.0 to 12.0 Carbon 0.06 to 0.10 Cobalt 5.0 to 15.0 Titanium 3.0 to 5.0 Aluminum 3.0 to 5.0 Tungsten 3.0 to 12.0 Molybdenum 1.0 to 5.0 Boron 0.0080 to 0.01 Rhenium 0 to 10.0 Tantalum 2.0 to 6.0 Columbium 0 to 2.0 Vanadium 0 to 3.0 Hafnium 0 to 2.0 and remainder nickel and incidental impurities. |
