# US 9,752,215 B2 · Superalloy compositions, articles, and methods of manufacture

> Agents: this data is available as JSON from the patentgrep API and MCP server — see https://patentgrep.com/llms.txt

- Number: US 9,752,215 B2
- Document ID: US9752215B2
- Status: Granted
- Kind: B2
- Application number: 13/372,590
- Filed: 2012-02-14
- Published: 2013-08-15
- Granted: 2017-09-05
- Earliest claimed: 2012-02-14
- Assignees: United Technologies Corporation
- Applicants: Paul L. Reynolds; Jerry C. Capo; Darryl Slade Stolz
- Inventors: Paul L. Reynolds; Jerry C. Capo; Darryl Slade Stolz
- Web page: https://patentgrep.com/patent/US9752215B2

## CPC

- C22C 19/056: {with the maximum Cr content being at least 10% but less than 20%}
- B22F 5/009: {of turbine components other than turbine blades (of turbine blades B22F5/04)}
- C22C 1/0433: {Nickel- or cobalt-based alloys}
- C22C 19/057: {with the maximum Cr content being less 10%}
- C22C 30/00: Alloys containing less than 50% by weight of each constituent
- C22F 1/10: of nickel or cobalt or alloys based thereon
- B22F 2998/10: Processes characterised by the sequence of their steps
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- B22F: WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER (making alloys by powder metallurgy C22C); APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
- 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

A composition of matter, comprising in combination, in atomic percent contents: a content of nickel as a largest content; 19.0-21.0 percent cobalt; 9.0-13.0 percent chromium; 1.0-3.0 percent tantalum; 0.9-1.5 percent tungsten; 7.0-9.5 percent aluminum; 0.10-0.25 percent boron; 0.09-0.20 percent carbon; 1.5-2.0 percent molybdenum; 1.1-1.5 percent niobium; 3.0-3.6 percent titanium; and 0.02-0.09 percent zirconium.

## Claims

### Claim 1

A composition of matter, comprising in combination, in atomic percent contents:
a content of nickel as a largest content;
19.0-21.0 percent cobalt;
9.0-11.4 percent chromium;
1.4-3.0 percent tantalum;
0.9-1.5 percent tungsten;
7.0-9.5 percent aluminum;
0.10-0.25 percent boron;
0.09-0.20 percent carbon;
1.5-2.0 percent molybdenum;
1.1-1.5 percent niobium;
3.0-3.6 percent titanium; and
0.02-0.09 percent zirconium.

### Claim 2 (depends on 1)

The composition of claim 1 in powder form.

### Claim 3 (depends on 1)

A gas turbine engine turbine or compressor disk having the composition of claim 1.

### Claim 4 (depends on 1)

The composition of claim 1 wherein said respective contents are:
20.3-20.9 percent cobalt;
9.4-11.3 percent chromium;
1.8-2.5 percent tantalum;
0.9-1.0 percent tungsten;
7.9-9.2 percent aluminum;
0.15-0.23 percent boron;
0.09-0.16 percent carbon;
1.74-1.95 percent molybdenum;
1.20-1.26 percent niobium;
4.25-3.45 percent titanium; and
0.03-0.06 percent zirconium.

### Claim 5 (depends on 1)

The composition of claim 1 consisting essentially of said combination.

### Claim 6 (depends on 1)

The composition of claim 1 comprising no more than 0.50 weight percent hafnium.

### Claim 7 (depends on 1)

The composition of claim 1 comprising no more than 0.05 weight percent hafnium.

### Claim 8 (depends on 1)

The composition of claim 1 wherein:
said content of nickel is at least 50 weight percent.

### Claim 9 (depends on 1)

The composition of claim 1 wherein:
said content of nickel is 43-57 weight percent.

### Claim 10 (depends on 1)

The composition of claim 1 wherein:
said content of nickel is 48-52 weight percent.

### Claim 11 (depends on 1)

The composition of claim 1 having:
a value Ta above 1.45 using atomic percent.

### Claim 12 (depends on 1)

The composition of claim 1 having:
a value (Cr/(Al*Ta)) below 1.0 using atomic percent.

### Claim 13 (depends on 1)

The composition of claim 1 having:
a value (Cr/(Al*Ta)) below 0.53 using atomic percent.

### Claim 14 (depends on 1)

The composition of claim 1 having:
a value ((Cr/Al)2) less than 2.15 using atomic percent.

### Claim 15 (depends on 1)

The composition of claim 1 wherein said respective contents are:
20.1-21.0 percent cobalt;
9.2-11.4 percent chromium;
1.4-2.5 percent tantalum;
0.94-1.3 percent tungsten;
7.1-9.2 percent aluminum;
0.14-0.24 percent boron;
0.09-0.20 percent carbon;
1.7-2.0 percent molybdenum;
1.15-1.30 percent niobium;
3.20-3.50 percent titanium; and
0.03-0.07 percent zirconium.

### Claim 16 (depends on 15)

The composition of claim 15 having:
a value (Ta/Cr)2 above 0.022 using atomic percent.

### Claim 17 (depends on 15)

The composition of claim 15 having:
a value (1/(Al*Cr)) above 0.011 using atomic percent.

### Claim 18 (depends on 15)

The composition of claim 15 having:
a value (Cr*Ta) above 17.5 using atomic percent.

### Claim 19 (depends on 15)

The composition of claim 15 having:
a value (Cr/Ta) below 7.21 using atomic percent.

### Claim 20 (depends on 15)

The composition of claim 15 having:
a value ((Al*Ta)/Cr) above 1.15 using atomic percent.

### Claim 21 (depends on 15)

The composition of claim 15 having:
a value Ta above 1.67 using atomic percent.

### Claim 22 (depends on 1)

The composition of claim 1 further comprising:
no more than 1.0 weight percent, individually, of every additional constituent, if any.

### Claim 23 (depends on 22)

The composition of claim 22 further comprising:
no more than 1.0 weight percent, in total, of all additional constituents, if any.

### Claim 24 (depends on 1)

A process for forming an article comprising:
compacting a powder having the composition of claim 1;
forging a precursor formed from the compacted powder; and
machining the forged precursor.

### Claim 25 (depends on 24)

The process of claim 24 further comprising:
heat treating the precursor, at least one of before and after the machining, by heating to a temperature of no more than 1232° C. (2250° F.).

### Claim 26 (depends on 24)

The process of claim 24 further comprising:
heat treating the precursor, at least one of before and after the machining, the heat treating effective to increase a characteristic γ grain size from a first value of about 10 μm or less to a second value of 20-120 μm.