Ni-BASED HEAT-RESISTANT ALLOY
First Claim
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1. A Ni-based heat-resistant alloy comprising Ir:
- 5.0 mass % or more and 50.0 mass % or less, Al;
1.0 mass % or more and 8.0 mass % or less, W;
5.0 mass % or more and 25.0 mass % or less, and balance Ni, having an L12-structured γ
′
phase present in the matrix, andincluding at least one of Zr;
0.01 mass % or more and 3.0 mass % or less and Hf;
0.01 mass % or more and 3.0 mass % or less.
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Abstract
The present invention relates to a Ni-based heat-resistant alloy including Ir: 5.0 mass % or more and 50.0 mass % or less, Al: 1.0 mass % or more and 8.0 mass % or less, W: 5.0 mass % or more and 25.0 mass % or less, and balance Ni, having an L12-structured γ′ phase present in the matrix, and including at least one of Zr: 0.01 mass % or more and 3.0 mase/0 or less and Hf: 0.01 mass % or more and 3.0 mass % or less. This Ni-based heat-resistant alloy has improved toughness over a conventional Ni-based heat-resistant alloy based on a Ni—Ir—Al—W-based alloy, and is also excellent in ambient-temperature strength.
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Citations
4 Claims
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1. A Ni-based heat-resistant alloy comprising Ir:
- 5.0 mass % or more and 50.0 mass % or less, Al;
1.0 mass % or more and 8.0 mass % or less, W;
5.0 mass % or more and 25.0 mass % or less, and balance Ni, having an L12-structured γ
′
phase present in the matrix, andincluding at least one of Zr;
0.01 mass % or more and 3.0 mass % or less and Hf;
0.01 mass % or more and 3.0 mass % or less. - View Dependent Claims (2, 3, 4)
- 5.0 mass % or more and 50.0 mass % or less, Al;
Specification