# US 2014/0191017 A1 · Nickel-based alloy, use and method

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- Number: US 2014/0191017 A1
- Document ID: US20140191017A1
- Status: Published application
- Kind: A1
- Application number: 14/131,105
- Filed: 2012-06-13
- Published: 2014-07-10
- Earliest claimed: 2011-07-12
- Assignees: Siemens Aktiengesellschaft
- Inventors: Nikolai Arjakine; Torsten Jokisch; Andreas Neidel; Michael Ott; Sebastian Piegert; Dimitrios Thomaidis
- Web page: https://patentgrep.com/patent/US20140191017A1

## CPC

- B23P 6/007: {using only additive methods, e.g. build-up welding}
- B23K 35/0244: {Powders, particles or spheres; Preforms made therefrom}
- B23K 35/22: characterised by the composition or nature of the material
- B23K 35/3033: {Ni as the principal constituent}
- B23K 35/304: {with Cr as the next major constituent}
- C22C 19/056: {with the maximum Cr content being at least 10% but less than 20%}
- B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
- B23K: SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- C22C: ALLOYS (treatment of alloys C21D, C22F)

## Abstract

The invention relates to a novel alloy which comprises the elements carbon (C), chromium (Cr), cobalt (Co), molybdenum (Mo), tungsten (W), titanium (Ti), aluminium (Al), boron (B), and zirconium (Zr), based on nickel, and which has a very low tendency to form cracks during welding.

## Claims

### Claim 1

A nickel-based alloy
which at least comprises (in % by weight):
carbon (C) 0.13%-0.2%,
chromium (Cr) 13.5%-14.5%,
cobalt (Co) 9.0%-10.0%,
molybdenum (Mo) 1.5%-2.4%,
tungsten (W) 3.4%-4.0%,
titanium (Ti) 4.6%-5.0%,
aluminum (Al) 2.6%-3.0%,
boron (B) 0.005%-0.008%,
with a remainder of nickel (Ni),
optionally
niobium (Nb) max. 0.1%,
tantalum (Ta) max. 0.1%,
zirconium (Zr) max. 0.05% and at least 0.02%,
hafnium (Hf) max. 0.1%,
silicon (Si) max. 0.1%,
manganese (Mn) max. 0.1%
and impurities,
comprising phosphorus (P), iron (Fe), sulfur (S), vanadium (V), copper (Cu), lead (Pb), bismuth (Bi), selenium (Se), tellurium (Te), thallium (Tl), magnesium (Mg), nitrogen (N), silver (Ag), and comprises these alloying elements.

### Claim 2 (depends on 1)

The nickel-based alloy as claimed in claim 1, which at least comprises (values in % by weight, in particular ±5%): 0.15% carbon (C), 4.3% chromium (Cr), 9.5% cobalt (Co),
1.7% molybdenum (Mo),
3.7% tungsten (W),
4.8% titanium (Ti),
2.8% aluminum (Al),
0.0075% boron (B),
optionally 0.025% zirconium (Zr),
and remainder nickel (Ni).

### Claim 3 (depends on 1)

The alloy as claimed in claim 1, which comprises no niobium (Nb).

### Claim 4 (depends on 1)

The alloy as claimed in claim 1, which comprises no tantalum (Ta).

### Claim 5 (depends on 1)

The alloy as claimed claim 1, which comprises no silicon (Si) or no gallium (Ga) or no germanium (Ge).

### Claim 6 (depends on 1)

The alloy as claimed in claim 1, which comprises no hafnium (Hf).

### Claim 7 (depends on 1)

The alloy as claimed in claim 1, which comprises no manganese (Mn).

### Claim 8 (depends on 1)

The alloy as claimed in claim 1, which comprises no rhenium (Re).

### Claim 9 (depends on 1)

A welding alloy for nickel-based or cobalt-based alloys comprised of the alloy of claim 1.

### Claim 10 (depends on 9)

A filler material for welding Rene 80 comprised of the alloy of claim 9.

### Claim 11 (depends on 1)

A process for repairing a component, comprising welding a nickel-based or cobalt-based substrate using an alloy as claimed in claim 1 as a filler material.

### Claim 12 (depends on 11)

The process as claimed in claim 11, further comprising not overaging the component before the welding.

### Claim 13 (depends on 11)

The process as claimed in claim 11, further comprising not preheating the component during the welding.

### Claim 14 (depends on 11)

The process as claimed in claim 11, further comprising carrying out powder build-up welding.

### Claim 15 (depends on 11)

The process as claimed in claim 11, further comprising carrying out the process at room temperature.

### Claim 16 (depends on 11)

The process as claimed in claim 11, in which Rene 80 is welded.