Unlock instant, AI-driven research and patent intelligence for your innovation.

Cobalt-nickel based alloys and methods of making articles therefrom

A technology of alloys and articles, applied in the field of cobalt-nickel-based alloys, can solve the problems of poor oxidation resistance and corrosion resistance, not protection, etc.

Active Publication Date: 2016-11-02
GENERAL ELECTRIC CO
View PDF6 Cites 1 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Under typical oxidation conditions, Co-based alloys strengthened with Co3(Al,W) usually form cobalt-rich oxides such as CoO, Co3O4 and CoWO4, which are not protective and lead to poor resistance to oxidation and corrosion

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Cobalt-nickel based alloys and methods of making articles therefrom
  • Cobalt-nickel based alloys and methods of making articles therefrom
  • Cobalt-nickel based alloys and methods of making articles therefrom

Examples

Experimental program
Comparison scheme
Effect test

Embodiment

[0062] The alloys disclosed herein, and more specifically set forth in this example, have figure 1 The compositions set forth in, Alloys Co-01 and Co-02, and more specifically Alloy Co-01 demonstrate a particularly desirable combination of alloy properties described herein. For example, these alloys have figure 2 and demonstrate a γ' solvus temperature of at least about 1050°C and a solution window between the solidus temperature and the γ' solvus temperature that is greater than or equal to about 150°C, and more Specifically, greater than or equal to about 200°C. This is a very advantageous property because it provides a relatively large temperature range within which Alloy 2 can be thermodynamically processed by forging, extrusion, rolling, hot isostatic pressing, and other forming processes to form the articles described herein 10.

[0063] In another example, these alloys 2 have excellent high temperature oxidation resistance compared to conventional Co-based or Ni-bas...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

PropertyMeasurementUnit
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention discloses a high-temperature, high-strength, oxidation-resistant cobalt-nickel-based alloy (2). The alloy comprises, by weight percent: about 3.5-about 4.9% Al, about 12.2-about 16.0% W, about 24.5-about 32.0% Ni, about 6.5%-about 10.0% Cr, about 5.9%-about 11.0% %Ta and the balance of Co and incidental impurities. A method (100) of making an article having high temperature strength, cyclic oxidation resistance, and corrosion resistance is disclosed. The method includes forming (110) a high temperature, high strength, oxidation resistant cobalt-nickel based alloy described herein; forming (120) an article from the alloy; solution treating (130) the alloy by solution heat treatment; providing at least one aging heat treatment to age the (140) alloy at a temperature less than the gamma' solvus temperature, wherein the alloy is configured to form a continuous protective adherent oxide layer on the surface of the alloy when exposed to a high temperature oxidizing environment .

Description

technical field [0001] The invention belongs to the technical field of cobalt-nickel base alloys. Background technique [0002] The present invention discloses high temperature high strength Co-Ni based alloys and methods of making articles therefrom. More specifically, the present invention discloses a γ' strengthened Co-Ni based alloy capable of forming a protectively attached oxide surface layer or scale, and methods for producing it. These alloys are suitable for the manufacture of articles for applications where high temperature strength and oxidation resistance are required. [0003] In many high temperature applications, especially for industrial gas turbines and aircraft engine components, chemical plant materials, automotive engine components such as turbocharger rotors, high temperature furnace materials, etc., high strength and excellent oxidation resistance are required in high temperature operating environments . In some of these applications, Ni-based supera...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/00C22F1/00
CPCC22C19/057C22F1/10C22C19/07
Inventor A.苏祖基M.F.X.小吉格利奥蒂A.J.埃利奥特K.B.莫里P.苏布拉马尼安
Owner GENERAL ELECTRIC CO