| 摘要 |
PURPOSE:To provide superior stress corrosion cracking resistance and hydrogen cracking resistance, by limiting the additive amounts of Al, Ti, and Nb within a specific range and by controlling the Si and Mn content, when manufacturing the precipitation strengthening type Ni-base alloy of combined addition system. CONSTITUTION:The highly corrosion-resistant Ni-base alloy consists of, by weight, <0.05% C, <0.15% Si, 0.3-2% Mn, 45-60% Ni, 18-27% Cr, 0.4-3.5% Ti, 2.5-5.5% Mo and/or <11% W(2.5%<=Mo+1/2W<=5.5%), <1.5% Al, <6.2% Nb and/or <2% Ta(Nb+1/2Ta<=6.2%), <0.25% P, <0.005% S, <0.05% N, and the balance Fe with inevitable impurities and satisfies (2Al+Ti+1/2 Nb<=3.5%).
|
