Nickel-based superalloy with microstructure including rafting-resistant gamma prime phase and article prepared therefrom

Patent metadata

Field	Value
Publication number	US-11098395-B2
Application number	US-201916718797-A
Country	US
Kind code	B2
Filing date	Dec 18, 2019
Priority date	Dec 18, 2019
Publication date	Aug 24, 2021
Grant date	Aug 24, 2021

Abstract

In a non-limiting example, an article having a body including a nickel-based superalloy is provided. The nickel-based superalloy has a microstructure that includes a gamma phase matrix and a gamma prime phase including a plurality of rafting-resistant gamma prime particles dispersed in the gamma phase matrix. The plurality of the rafting-resistant gamma prime particles has an average particle perimeter of about 3 microns to about 15 microns, an average aspect ratio of about 1.2 to about 3, and where the microstructure of the nickel-based superalloy is substantially uniform throughout the body.

First claim

What is claimed is:

1. An article comprising:
a body having a first side wall, a second side wall opposite to the first side wall, and a body dimension extending between the first side wall and the second side wall, the body further including a nickel-based superalloy having a microstructure that includes:
a gamma phase matrix, and
a gamma prime phase including a plurality of rafting-resistant gamma prime particles dispersed in the gamma phase matrix, wherein the plurality of the rafting-resistant gamma prime particles has an average particle perimeter of about 3.0 microns to about 15.0 microns, an average aspect ratio of about 1.2 to about 3.0, and wherein one or both of the average particle perimeter and the average aspect ratio of the plurality of rafting-resistant gamma prime particles have a measured value that is substantially uniform throughout the body dimension of the body.

2. The article of claim 1 , wherein the body has a weight of no less than about 15 pounds.

3. The article of claim 1 , wherein the body has a weight in a range of about 15 pounds to about 55 pounds.

4. The article of claim 1 , wherein the gamma prime phase is present in about 55 volume percent (% v/v) to about 75 volume percent (% v/v) of the superalloy.

5. The article of claim 1 , wherein the plurality of the rafting-resistant gamma prime particles has an average particle size of about 1.0 micron to about 6.0 microns.

6. The article of claim 1 , wherein the nickel-based superalloy comprises a single crystal grain microstructure.

7. The article of claim 1 , wherein the nickel-based superalloy includes from about 4.0 weight percent to about 7.0 weight percent aluminum (Al), from about 5.0 weight percent to about 10.0 weight percent chromium (Cr), from about 6.0 weight percent to about 10.0 weight percent cobalt (Co), from 0 weight percent to about 1.5 weight percent hafnium (Hf), from 0 weight percent to about 4.0 weight percent molybdenum (Mo), from 0 weight percent to about 2.0 weight percent niobium (Nb), from 0 weight percent to about 6.0 weight percent rhenium (Re), from about 4.0 weight percent to about 10.0 weight percent tantalum (Ta), from 0 weight percent to about 4.0 weight percent titanium (Ti), from about 4.0 weight percent to about 8.0 weight percent tungsten (W), and the balance Ni and incidental impurities.

8. The article of claim 1 , wherein the nickel-based superalloy includes from about 4.0 weight percent to about 7.0 weight percent aluminum (Al), from about 5.0 weight percent to about 7.0 weight percent chromium (Cr), from about 6.5 weight percent to about 8.5 weight percent cobalt (Co), from 0 weight percent to about 0.2 weight percent hafnium (Hf), from about 1.0 weight percent to about 2.0 weight percent molybdenum (Mo), from 0 weight percent to about 3.5 weight percent rhenium (Re), from about 5.5 weight percent to about 7.5 weight percent tantalum (Ta), from about 5.0 weight percent to about 7.0 weight percent tungsten (W), and the balance Ni and incidental impurities.

9. The article of claim 1 , wherein the body is a portion of a turbine component.

10. The article of claim 1 , wherein the body is substantially free of cavities within the body dimension.

11. The article of claim 1 , wherein the body dimension of the body includes an outer section, an inner section, and an intermediate section adjacent both the outer section and the inner section, and the body further includes a cooling passageway disposed within one or more of the outer section, the inner section, and the intermediate section.

Assignees

• Gen Electric

Inventors

• Arnett Michael Douglas
• Schaeffer Jon Conrad
• Peck Arthur Samuel
• Konter Maxim

Classifications

• F01D25/005

  Selecting particular materials · CPC title

• C22F1/10 Primary

  of nickel or cobalt or alloys based thereon · CPC title

• C22C19/057 Primary

  with the maximum Cr content being less 10% · CPC title

• C22C19/056

  with the maximum Cr content being at least 10% but less than 20% · CPC title

• C30B29/52

  Alloys · CPC title