| 摘要 |
<P>PROBLEM TO BE SOLVED: To provide an Ni-based heat-resistant superalloy excellent in a tension characteristic and a creep characteristic, of course, at the room temperature and at the high temperature of ≥700°C by improving the constitution. <P>SOLUTION: This nickel-based heat-resistant superalloy is composed, by weight, of 8.0-13.0% Co, ≤1.0% Fe, 18.0-25.0% Cr, 0.1-1.5% Mo, 0.1-3% W, 0.5-2.0% Al, 0.5-1.1% Ti, 0.5-2.5% Nb, 0.01-1.0% C, ≤0.5% Mn, ≤0.5% Si, ≤0.008% B, ≤0.05% Zr and the balance Ni with inevitable impurities. Further, this superalloy has mixed microstructure of γ base and γ' precipitation. <P>COPYRIGHT: (C)2012,JPO&INPIT |
