| 摘要 |
PROBLEM TO BE SOLVED: To provide a constituent member of a high-temperature steam turbine and a high-temperature steam turbine. SOLUTION: The constituent member of the high-temperature steam turbine driven at a temperature exceeding 600°C, especially exceeding 700°C is made of a nickel base alloy. Adverse effects of oxidization of the constituent member caused by superheated vapor are prevented by the alloy to be used having the following composition (by wt.%): C:≤0.2, Si:≤1.0, Mn:≤1.0, Cr: 22.0 to 25.0, Co: 15.0 to 25.0, Mo:≤3.0, Nb:≤2.0, Al: 1.0 to 3.0, Ti: 2.0 to 4.0, Fe:≤2.0, Zr:≤0.2, B:≤0.05, Ni: the remaining part. COPYRIGHT: (C)2010,JPO&INPIT |
