Nickel material and method for manufacturing nickel material
Provided is a nickel material having excellent corrosion resistance and high strength, and a method for manufacturing the nickel material. A nickel material has a chemical composition consisting of, in mass %, C: 0.001 to 0.20%, Si: 0.15% or less, Mn: 0.50% or less, P: 0.030% or less, S: 0.010% or less, Cu: 0.10% or less, Mg: 0.15% or less, Ti: 0.005 to 1.0%, Nb: 0.040 to 1.0%, Fe: 0.40% or less, sol. Al: 0.01 to 0.10%, an N: 0.0010 to 0.080%, with the balance being Ni and impurities, and satisfying Formula (1) and Formula (2). 0.030≤( 45/48)Ti+( 5/93)Nb−( 1/14)N<0.25 (1) 0.030<( 3/48)Ti+( 88/93)Nb−( 1/12)C (2) A content (mass %) of a corresponding element is substituted for each element symbol in Formula (1) and Formula (2).
1. A nickel material comprising a chemical composition consisting of, in mass %,
C: 0.001 to 0.20%,
Si: 0.15% or less,
Mn: 0.50% or less,
P: 0.030% or less,
S: 0.010% or less,
Cu: 0.10% or less,
Mg: 0.15% or less,
Ti: 0.005 to 1.0%,
Nb: 0.040 to 1.0%,
Fe: 0.40% or less,
sol. Al: 0.01 to 0.10%, and
N: 0.0010 to 0.080%,
with the balance being Ni and impurities, and satisfying Formula (1) and Formula (2):
0.030≤( 45/48)Ti+( 5/93)Nb−( 1/14)N<0.25 (1)
0.030<( 3/48)Ti+( 88/93)Nb−( 1/12)C (2)
where a content (mass %) of a corresponding element is substituted for each element symbol in Formula (1) and Formula (2).
2. A method for manufacturing the nickel material according to claim 1 comprising the steps of:
manufacturing molten metal by adding C, Si, Mn, P, S, Cu, Mg, Nb, Fe and Al such that a sol. Al content in the molten metal is 0.01% or more;
forming a Ti nitride in the molten metal such that Ti is added to and dissolved in the molten metal where the sol. Al content is 0.01% or more, and thereafter that N is added to the molten metal; and
manufacturing a nickel material having the chemical composition using the molten metal including the Ti nitride formed therein.