Nickel-based alloy
AssigneeAlleima EMEA AB
InventorsMartin ÖSTLUND, Thomas HELANDER, Mats HÄTTESTRAND, Mats LUNDBERG, Ulrika BORGGREN, Christina HARALDSSON
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Abstract
The present invention relates to a dispersion strengthened alumina forming nickel-based alloy comprising in percent by weight (wt %) C 0.08 to 0.28; Si 0 to 1.50; Mn 0 to 0.50; Cr 15.0 to 20.0; Al 4.0 to 5.0; Fe 15.0 to 25.0; N 0.030 to 0.075; O 0 to 0.1; B 0 to 0.02; Y 0.01 to 0.1; at least one of Ta, Zr, Hf, Ti and Nb 1.0 to 2.7; balance Ni and normally occurring impurities; and wherein said alloy fulfils the requirements of: (C+N)/(Ta+Zr+Hf+Nb+Ti)≥1.4 (values in at %) [1]; Zr+Hf−N≥0.05 (values in at %) [2]. The present alloy will have excellent hot ductility.
Claims12
A dispersion strengthened alumina forming nickel-based alloy, comprising in percent by weight (wt %):
- C
- 0.08 to 0.28;
- Si
- [[0to]] 0 to 1.50;
- Mn
- [[0to]] 0 to 0.50;
- Cr
- 15.0 to 20.0;
- Al
- 4.0 to 5.0;
- Fe
- 15.0 to 25.0;
- N
- 0.030 to 0.075;
- O
- 0 to 0.1;
- B
- 0 to 0.02;
- Y
- 0.01 to 0.1;
- at least one of Ta, Zr, Hf, Ti and Nb 1.0 to 2.7;
- and
- balance Ni and normally occurring impurities,
- wherein said alloy fulfils the requirements of:
- (
- C
- +
- N
- )
- /
- (
- Ta
- +
- Zr
- +
- Hf
- +
- Nb
- +
- Ti
- )
- ≥
- 1.4
- (
- values
-
- in
-
- at
-
- %
- )
- ,
- and
- Zr
- +
- Hf
- -
- N
- ≥
- 0.05
- (
- values
-
- in
-
- at
-
- %
- )
- .
Dependencies are inferred from the claim text.