| 摘要 |
PROBLEM TO BE SOLVED: To provide a method of producing a welding wire made of Ni-based super alloy excellent in welding property and bonding strength. SOLUTION: A first ingot having a composition which contains, by mass, 0.01% or more and 0.15% or less of C, 1% or less of Si, 1% or less of Mn, 5% or more and 20% or less of Cr, more than 5% and 10% or less of Mo, less than 20% of W, more than 5% and 15% or less of Mo+(1/2)W, 0.8% or more and less than 1.5% of Al, 0.30% or more and 0.85% or less of Ti, more than 1.5% and 3.0% or less of Nb and 4.0% or less of Fe, wherein Al+Ti+Nb is 3.0 atm% or more and 5.9 atm% or less, and wherein the atom% ratio:Nb/(Al+Ti) is 0.35 or more and 0.60 or less, and the balance being Ni and inevitable impurities is obtained by a VIF method, is formed into a second ingot by applying a VAR method and an ESR method and is formed into the welding wire through homogenizing processing, hot working, solid solubilizing processing and wire drawing working. COPYRIGHT: (C)2011,JPO&INPIT |
