| 简介 |
PROBLEM TO BE SOLVED : To provide an Ni based alloy for unidirectional solidification which has excellent creep rupture strength at high temperature, further has excellent oxidation resistance at high temperature and is optimum for a high temperature gas turbine. SOLUTION : The nickel based superalloy comprises, by mass, 5.8 to 11.0% Cr, 6.0 to 18.0% Co, 3.8 to 11.0% W, ≤3.3% Re, 2.0 to 10.0% Ta, 0.6 to 2.4% Ti, 4.5 to 6.5% Al, 0.1 to 2.0% Hf, 0.05 to 0.15% C, 0.001 to 0.05% B, 0.001 to 0.05% Zr, COPYRIGHT : (C)2011, JPO&INPIT |
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