NICKEL-BASED ALLOY FOR ADDITIVE MANUFACTURING, METHOD AND PRODUCT

Abstract

A nickel-based alloy for additive manufacturing, method and product wherein due to a specific selection of elements and adaptations, an improved alloy for casting and for additive manufacturing is provided.

Claims

1. A nickel-based superalloy, which at least comprises, elements of (in wt %): TABLE-US-00003 carbon (C) 0.03%-0.13% chromium (Cr) 12.5%-16.0% molybdenum (Mo) 1.0%-2.0% tungsten (W) 2.0%-4.0% aluminum (Al) 4.0%-5.5% boron (B) 0.0025%-0.015%  zirconium (Zr) 0.0025%-0.015%  tantalum (Ta)  3.0%-7.0%, more particularly  4.0%-7.0%, iron (Fe) 3.0%-7.0% hafnium (Hf)  1.4%-2.2%, and optionally further elements cobalt (Co)  0.0%-5.0%, more particularly  0.0%-4.0%, especially  0.0%-3.0%, niobium (Nb) max. 1.0%, more particularly 0.5%-1.0% especially 0.1% to 0.5% rhenium (Re) max. 1.0% more particularly 0.5%-1.0% especially 0.1% to 0.5% silicon (Si) max. 0.02% manganese (Mn) max. 0.05% phosphorus (P) max. 0.005% sulfur (S) max. 0.001% titanium (Ti) max. 0.2% copper (Cu) max. 0.01% vanadium (V) max. 0.1% silver (Ag) max. 0.0005% lead (Pb) max. 0.0002% selenium (Se) max. 0.0010% oxygen (O) max. 0.0200% gallium (Ga) max. 0.0030% bismuth (Bi) max. 0.0010% nitrogen (N) max. 0.0050% magnesium (Mg) max. 0.0070% yttrium (Y) max. 0.02% cerium (Ce) max. 0.02%.

2. The alloy as claimed in claim 1, comprising: at least 0.5% cobalt (Co), more particularly 0.5% to 4.0%, especially 0.5% to 3.0%.

3. The alloy as claimed in claim 1, comprising: at least 0.5% cobalt (Co), more particularly 0.5% to 2.0%, especially 0.5% to 1.0%.

4. The alloy as claimed in claim 1, comprising: at least 3.0 to 5.0% tantalum (Ta), more particularly 4.0% to 5.0%, especially 4.5%.

5. The alloy as claimed in claim 1, comprising: at least 5.1 to 7.0% tantalum (Ta), more particularly 6.0% to 7.0%, especially 6.5%.

6. The alloy as claimed in claim 1, comprising: at least 3.0 to 5.0% iron (Fe), more particularly 4.0% to 5.0%, especially 4.5%.

7. The alloy as claimed in claim 1, comprising: at least 5.1 to 7.0% iron (Fe), more particularly 6.0% to 7.0%, especially 6.5%.

8. A method for producing or repairing a component, comprising: using an alloy as claimed claim 1.

9. The method as claimed in claim 8, further comprising: using a powder bed process, selective melting (SLM), and/or selective sintering (SLS) by laser beam or electron beams.

10. The method as claimed in claim 8, further comprising: using a powder deposition welding process, and/or a laser powder deposition welding process.

11. A product comprising: an alloy as claimed in claim 1.

12. A nickel-based superalloy, consisting of the elements (in wt %) of claim 1.

Description

DETAILED DESCRIPTION OF INVENTION

[0016] Some examples, though without limitation, are as follows:

TABLE-US-00002 C Cr Mo Al Hf Co Ta Fe 1 0.04 12.5 1.2 4.1 1.4 0 3.1 7.0 2 0.06 13.1 1.6 4.6 1.7 1 3.5 7.0 3 0.1 14.0 1.8 5.2 1.9 2 4.7 7.0 4 0.12 15.5 2.0 5.5 2.2 3 5.1 7.0 5 0.04 12.5 1.2 4.1 1.4 0 5.5 7.0 6 0.06 13.1 1.6 4.6 1.7 1 6.1 7.0 7 0.1 14.0 1.8 5.2 1.9 2 6.6 7.0 8 0.12 15.5 2.0 5.5 2.2 3 7.0 7.0 9 0.04 12.5 1.2 4.1 1.4 0 3.1 6.4 10 0.06 13.1 1.6 4.6 1.7 1 3.5 5.8 11 0.1 14.0 1.8 5.2 1.9 2 4.7 4.9 12 0.12 15.5 2.0 5.5 2.2 3 5.1 4.0 13 0.04 12.5 1.2 4.1 1.4 0 5.5 6.4 14 0.06 13.1 1.6 4.6 1.7 1 6.1 5.8 15 0.1 14.0 1.8 5.2 1.9 2 6.6 4.9 16 0.12 15.5 2.0 5.5 2.2 3 7.0 4.0 17 0.04 12.5 1.2 4.1 1.4 0 3.1 6.4 18 0.06 13.1 1.6 4.6 1.7 1 3.5 5.8 19 0.1 14.0 1.8 5.2 1.9 2 4.7 4.9 20 0.12 15.5 2.0 5.5 2.2 3 5.1 4.0 21 0.04 12.5 1.2 4.1 1.4 0 5.5 6.4 22 0.06 13.1 1.6 4.6 1.7 1 6.1 5.8 23 0.1 14.0 1.8 5.2 1.9 2 6.6 4.9 24 0.12 15.5 2.0 5.5 2.2 3 7.0 4.0

[0017] The values for the alloy elements not listed, W, C, B, Zr, etc., correspond to those in the above listing.

[0018] Advantages with cobalt are achieved by means of at least 0.5% cobalt (Co), more particularly 0.5% to 4.0%, especially 0.5% to 3.0%.

[0019] Further advantages are achieved by means of at least 0.5% cobalt (Co), more particularly 0.5% to 2.0%, especially 0.5% to 1.0% in the alloy.

[0020] Advantages with tantalum are achieved by means of at least 3.0 to 5.0% tantalum (Ta), more particularly 4.0% to 5.0%, especially 4.5%.

[0021] Further advantages are achieved with at least 5.1 to 7.0% tantalum (Ta), more particularly 6.0% to 7.0%, especially 6.5% in the alloy.

[0022] Advantages with iron (Fe) are achieved by means of at least 3.0 to 5.0%, more particularly 4.0% to 5.0%, especially 4.5%.

[0023] Further advantages are achieved with at least 5.1 to 7.0% iron (Fe), more particularly 6.0% to 7.0%, especially 6.5% in the alloy.

[0024] The product which comprises the alloy described is advantageously a component which is used in the hot gas path of a turbomachine, such as of a gas turbine, for example. The component more particularly may be a rotor blade or guide vane, a segment or ring-segment, a burner part or a burner tip, a frame, a shield, a heat-shield, a nozzle, a seal, a filter, an outlet or a lance, a resonator, a stamp or a swirler, or a corresponding transition, insert or a corresponding retrofitted part.