# US 10,767,245 B2 · Nickel material and method for manufacturing nickel material

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- Number: US 10,767,245 B2
- Document ID: US10767245B2
- Status: Granted
- Kind: B2
- Application number: 16/339,774
- Filed: 2017-10-06
- Published: 2020-02-06
- Granted: 2020-09-08
- Earliest claimed: 2016-10-07
- Assignees: Nippon Steel Corporation
- Applicants: Nippon Steel Corporation
- Inventors: Kiyoko Takeda; Masaaki Terunuma
- Web page: https://patentgrep.com/patent/US10767245B2

## CPC

- C22C 19/03: based on nickel
- C22C 1/02: by melting {(C22C1/1036 takes precedence)}
- C22C 1/023: {Alloys based on nickel}
- C22C 19/005: {with Manganese as the next major constituent}
- C22C 19/007: {with a light metal (alkali metal Li, Na, K, Rb, Cs; earth alkali metal Be, Mg, Ca, Sr, Ba, Al Ga, Ge, Ti) or B, Si, Zr, Hf, Sc, Y, lanthanides, actinides, as the next major constituent}
- C22F 1/002: {by rapid cooling or quenching; cooling agents used therefor}
- C22F 1/10: of nickel or cobalt or alloys based thereon
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- C22F: CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS (surface treatment of metallic material involving at least one process provided for in class C23 and at least one process covered by this subclass, C23F17/00)

## Abstract

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).

## Claims

### Claim 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).

### Claim 2 (depends on 1)

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.