| 摘要 |
PROBLEM TO BE SOLVED: To provide a welding wire for nickel-based heat-resistant alloy, which is used for efficiently manufacturing or repairing various machine parts for a gas turbine by welding. SOLUTION: The invention relates to a welding wire for nickel-based heat-resistant alloy, which contains 14.0-21.5% Cr, 6.5-14.5% Co, 6.5-10.0% Mo, 1.5-3.5% W, 1.2-2.4% Al, 1.1-2.1% Ti, 7.0% or less Fe, 0.0001-0.020% B, 0.03-0.15% C, 0.1-1.0% Nb as needed, and Ni and unavoidable impurities as the balance. Each amount of S and P contained as the unavoidable impurities is stipulated to be 0.004% or less and 0.010% or less respectively. The wire has such a structure that M<SB>6</SB>C-type carbide and MC-type carbide disperse uniformly into the base material. COPYRIGHT: (C)2008,JPO&INPIT
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