# US 10,370,741 B2 · Nickel-base alloy and articles

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- Number: US 10,370,741 B2
- Document ID: US10370741B2
- Status: Granted
- Kind: B2
- Application number: 15/433,443
- Filed: 2017-02-15
- Published: 2017-08-03
- Granted: 2019-08-06
- Earliest claimed: 2011-06-01
- Assignees: ATI Properties, Inc.
- Applicants: ATI Properties LLC
- Inventors: Robin M. Forbes Jones; Christopher D. Rock
- Web page: https://patentgrep.com/patent/US10370741B2

## CPC

- C22C 19/058: {without Mo and W}
- B05D 3/007: {After-treatment}
- B05D 7/52: {Two layers}
- B21D 22/022: {by heating the blank or stamping associated with heat treatment (C21D takes precedence)}
- B21J 1/06: Heating or cooling methods or arrangements specially adapted for performing forging or pressing operations {(B21J5/063 takes precedence)}
- C08G 18/10: Prepolymer processes involving reaction of isocyanates or isothiocyanates with compounds having active hydrogen in a first reaction step
- C08G 18/222: {metal compounds not provided for in groups C08G18/225 - C08G18/26}
- C08G 18/3206: {aliphatic}
- C08G 18/4841: {containing oxyethylene end groups}
- C08G 18/7657: {containing two or more aromatic rings}
- C08G 18/7671: {containing only one alkylene bisphenyl group}
- C08J 9/32: from compositions containing microballoons, e.g. syntactic foams
- C08K 7/28: Glass
- C08L 75/04: Polyurethanes
- C09D 175/08: from polyethers
- C22C 19/05: with chromium
- C22F 1/10: of nickel or cobalt or alloys based thereon
- F16L 59/14: Arrangements for the insulation of pipes or pipe systems (F16L59/02 - F16L59/12 take precedence)
- C08J 2375/04: Polyurethanes
- C08J 2375/08: from polyethers
- C22C: ALLOYS (treatment of alloys C21D, C22F)
- B05D: PROCESSES FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (conveying articles or workpieces through baths of liquid B65G, e.g. B65G49/02)
- B21D: WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL (working or processing of wire B21F)
- B21J: FORGING; HAMMERING; PRESSING METAL; RIVETING; FORGE FURNACES (rolling of metal B21B; making particular products by forging or pressing B21K; cladding or plating B23K; finishing surfaces by hammering B23P9/04; compacting surfaces by blasting with particulate material B24C1/10; general features of presses, presses for consolidating scrap B30B; furnaces in general F27)
- C08G: MACROMOLECULAR COMPOUNDS OBTAINED OTHERWISE THAN BY REACTIONS ONLY INVOLVING UNSATURATED CARBON-TO-CARBON BONDS
- C08J: WORKING-UP; GENERAL PROCESSES OF COMPOUNDING; AFTER-TREATMENT NOT COVERED BY SUBCLASSES C08B, C08C, C08F, C08G or C08H (working, e.g. shaping, of plastics B29)
- C08K: Use of inorganic or non-macromolecular organic substances as compounding ingredients (paints, inks, varnishes, dyes, polishes, adhesives C09)
- C08L: COMPOSITIONS OF MACROMOLECULAR COMPOUNDS (compositions based on polymerisable monomers C08F, C08G; artificial filaments or fibres D01F; textile treating compositions D06)
- C09D: COATING COMPOSITIONS, e.g. PAINTS, VARNISHES OR LACQUERS; FILLING PASTES; CHEMICAL PAINT OR INK REMOVERS; INKS; CORRECTING FLUIDS; WOODSTAINS; PASTES OR SOLIDS FOR COLOURING OR PRINTING; USE OF MATERIALS THEREFOR (cosmetics A61K; processes for applying liquids or other fluent materials to surfaces, in general, B05D; staining wood B27K5/02; glazes or vitreous enamels C03C; natural resins, French polish, drying-oils, driers, turpentine, per se, C09F; polishing compositions other than French polish, ski waxes C09G; adhesives or use of materials as adhesives C09J; materials for sealing or packing joints or covers C09K3/10; materials for stopping leaks C09K3/12; processes for the electrolytic or electrophoretic production of coatings C25D)
- 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)
- F16L: PIPES; JOINTS OR FITTINGS FOR PIPES; SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING; MEANS FOR THERMAL INSULATION IN GENERAL

## Abstract

An alloy is disclosed comprising up to 0.05 weight percent carbon, 27.0 to 31.0 weight percent chromium, up to 0.5 weight percent copper, 7.0 to 11.0 weight percent iron, up to 0.5 weight percent manganese, up to 0.015 weight percent sulfur, up to 0.5 weight percent silicon, at least 58 weight percent nickel, and incidental impurities, wherein the alloy exhibits an ASTM grain size of 3.0 to 9.0, exhibits a uniform grain size distribution, includes intergranular M23C6 carbide precipitates uniformly distributed on grain boundaries, and includes minimal or no intragranular M23C6 carbide precipitates. Articles of manufacture including the alloy also are described.

## Claims

### Claim 1

An article of manufacture including an alloy comprising:
up to 0.05 weight percent carbon;
27.0 to 31.0 weight percent chromium;
up to 0.5 weight percent copper;
7.0 to 11.0 weight percent iron;
up to 0.5 weight percent manganese;
up to 0.015 weight percent sulfur;
up to 0.5 weight percent silicon;
at least 58 weight percent nickel; and
incidental impurities;
wherein the alloy exhibits an ASTM grain size of 3.0 to 9.0, exhibits a uniform grain size distribution, includes intergranular M23C6 carbide precipitates uniformly distributed on grain boundaries, and includes minimal or no intragranular M23C6 carbide precipitates, and
wherein the article of manufacture is selected from a rod, a bar, a round bar, a round rod, a rectangular bar, a rectangular rod, a hexagonal bar, a hexagonal rod, a forged rectangular long product, and a rolled rectangular long product.

### Claim 2 (depends on 1)

The article of manufacture of claim 1, wherein the article is one of a forged rectangular long product and a rolled rectangular long product.

### Claim 3 (depends on 1)

The article of manufacture of claim 1, wherein the alloy comprises:
up to 0.05 weight percent carbon;
28.0 to 30.0 weight percent chromium;
up to 0.25 weight percent copper;
8.0 to 10.0 weight percent iron;
up to 0.25 weight percent manganese;
up to 0.010 weight percent sulfur;
up to 0.25 weight percent silicon;
at least 58 weight percent nickel; and
incidental impurities.

### Claim 4 (depends on 1)

The article of manufacture of claim 1, wherein the alloy exhibits an ASTM grain size of 3.0 to 8.0.

### Claim 5 (depends on 1)

The article of manufacture of claim 1, wherein the alloy exhibits an ASTM grain size of 3.5 to 7.5.

### Claim 6 (depends on 1)

The article of manufacture of claim 1, wherein the alloy exhibits an ASTM grain size of 4.5 to 6.5.

### Claim 7 (depends on 1)

The article of manufacture of claim 1, wherein the alloy exhibits an ASTM grain size of 3.0 to 6.0.

### Claim 8 (depends on 1)

The article of manufacture of claim 1, wherein the alloy lacks intragranular M23C6 carbide precipitates.

### Claim 9 (depends on 1)

The article of manufacture of claim 1, wherein chemically etched specimens of the alloy lack metallographically observable intragranular M23C6 carbide precipitates when observed at 500× magnification by scanning electron microscopy.

### Claim 10 (depends on 1)

The article of manufacture of claim 1, wherein chemically etched specimens of the alloy include uniformly distributed intergranular M23C6 carbide precipitates on grain boundaries when observed at 500× magnification by scanning electron microscopy.

### Claim 11 (depends on 1)

The article of manufacture of claim 1, wherein the alloy lacks stringers of grain boundary precipitates.

### Claim 12

An article of manufacture including an alloy comprising:
up to 0.05 weight percent carbon;
27.0 to 31.0 weight percent chromium;
up to 0.5 weight percent copper;
7.0 to 11.0 weight percent iron;
up to 0.5 weight percent manganese;
up to 0.015 weight percent sulfur;
up to 0.5 weight percent silicon;
at least 58 weight percent nickel; and
incidental impurities;
wherein the alloy exhibits an ASTM grain size of 3.0 to 9.0 and a uniform grain size distribution;
wherein chemically etched specimens of the alloy include uniformly distributed intergranular M23C6 carbide precipitates on grain boundaries when observed at 500× magnification by scanning electron microscopy;
wherein chemically etched specimens of the alloy lack metallographically observable intragranular M23C6 carbide precipitates when observed at 500× magnification by scanning electron microscopy; and
wherein the article is selected from a rod, a bar, a round bar, a round rod, a rectangular bar, a rectangular rod, a hexagonal bar, a hexagonal rod, a forged rectangular long product, and a rolled rectangular long product.