Nickel-based superalloy for 3D printing and method for preparing nickel-based superalloy powder

A nickel-based superalloy, 3D printing technology, applied in the direction of metal processing equipment, process efficiency improvement, additive manufacturing, etc., can solve problems such as difficulty in meeting 3D printing requirements, low powder yield, poor composition uniformity, etc., to reduce Crack sensitivity, excellent mechanical properties, and high apparent density

Active Publication Date: 2020-11-27
CENT SOUTH UNIV
View PDF9 Cites 12 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The powders used for 3D printing nickel-based superalloys still have problems such as poor compositional uniformity, high oxygen content, poor sphericity, and low yield of powders suitable for 3D printing particle size distribution.
However, for "non-weldable" nickel-based superalloys, it is easy to crack and difficult to form during the 3D p

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
  • Nickel-based superalloy for 3D printing and method for preparing nickel-based superalloy powder
  • Nickel-based superalloy for 3D printing and method for preparing nickel-based superalloy powder
  • Nickel-based superalloy for 3D printing and method for preparing nickel-based superalloy powder

Examples

Experimental program
Comparison scheme
Effect test

Example Embodiment

[0071] Example 1:

[0072] The method of the invention is applied to the following René104 nickel-based superalloy, the mass fraction of rare earth elements is 0.08%, and the weight percentage of the alloy is: 20.6Co~13Cr~3.4Al~3.9Ti~3.8Mo~2.1W~2.4Ta~0.9 Nb~0.05Zr~0.03B~0.04C~0.08Sc~the balance is Ni. The steps of preparing nickel-based superalloy powder for 3D printing using the technical solution of the present invention are as follows:

[0073] (1) Vacuum smelting: The René 104 nickel-based superalloy raw material with a mass fraction of 0.08% rare earth Sc element is loaded into the crucible of the atomizing pulverizing furnace, and in a 0.05Pa vacuum atmosphere, heating and smelting is performed by induction with an intermediate frequency power supply;

[0074] (2) Degassing: after the raw materials are melted and completely alloyed, vacuum degassing for 15 minutes;

[0075] (3) Refining: Fill the furnace with high-purity argon gas to 0.1MPa, the purity of argon gas is ...

Example Embodiment

[0082] Embodiment 2:

[0083] The method of the invention is applied to the following René104 nickel-based superalloy, the mass fraction of rare earth elements is 0.08%, and the weight percentage of the alloy is: 20.6Co~13Cr~3.4Al~3.9Ti~3.8Mo~2.1W~2.4Ta~0.9 Nb~0.05Zr~0.03B~0.04C~0.08Y~the balance is Ni. The steps of preparing nickel-based superalloy powder for 3D printing using the technical solution of the present invention are as follows:

[0084] (1) Vacuum smelting: The René 104 nickel-based superalloy raw material with a mass fraction of 0.08% rare earth Y element is loaded into the crucible of the atomizing powder making furnace, and in a 0.05Pa vacuum atmosphere, heating and smelting is carried out by induction with an intermediate frequency power supply;

[0085] (2) Degassing: after the raw materials are melted and completely alloyed, vacuum degassing for 15 minutes;

[0086] (3) Refining: Fill the furnace with high-purity argon gas to 0.1MPa, the purity of argon ga...

Example Embodiment

[0090] Embodiment three:

[0091] The method of the invention is applied to the following René104 nickel-based superalloy, the mass fraction of rare earth elements is 0.08%, and the weight percentage of the alloy is: 20.6Co~13Cr~3.4Al~3.9Ti~3.8Mo~2.1W~2.4Ta~0.9 Nb~0.05Zr~0.03B~0.04C~0.04Sc~0.04Y~the balance is Ni. The steps of preparing nickel-based superalloy powder for 3D printing using the technical solution of the present invention are as follows:

[0092] (1) Vacuum smelting: The René 104 nickel-based superalloy raw materials with mass fractions of 0.04% Sc and 0.04% Y elements are loaded into the crucible of the atomizing pulverizing furnace, and heated in a 0.05Pa vacuum atmosphere by induction by an intermediate frequency power supply smelting;

[0093] (2) Degassing: after the raw materials are melted and completely alloyed, vacuum degassing for 15 minutes;

[0094] (3) Refining: Fill the furnace with high-purity argon gas to 0.1MPa, the purity of argon gas is 99.9...

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
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Particle sizeaaaaaaaaaa
Login to view more

Abstract

The invention provides a nickel-based superalloy for 3D printing and a method for preparing nickel-based superalloy powder and belongs to the technical field of superalloys and additive manufacturing.The nickel-based superalloy for 3D printing and the method for preparing the nickel-based superalloy powder aim at the problem that an unweldable powder nickel-based superalloy is likely to crack inthe 3D printing process. By means of rare earth microalloying, in combination with a vacuum melting, degassing, refining, reasonable parameter atomizing and screening process, the nickel-based superalloy meeting 3D printing needs and the powder thereof are prepared. According to the nickel-based superalloy for 3D printing and the method for preparing the nickel-based superalloy powder, the cracking sensitivity of the unweldable powder nickel-based superalloy is remarkably reduced, a 3D printing process window is widened, and a printed workpiece is free of cracks and excellent in mechanical property; meanwhile, the prepared powder is high in degree of sphericity, good in mobility and small in amount of special-shaped powder, and the yield of the fine powder with the grain size of 15-35 micrometers and the median-grain-size powder with the grain size of 53-106 micrometers is increased; and the need for the high-quality low-cost nickel-based superalloy powder for 3D printing is met

Description

technical field [0001] The invention provides a nickel-based superalloy for 3D printing and a powder preparation method thereof, belonging to the technical field of superalloys and additive manufacturing. Background technique [0002] With the rapid development of metal 3D printing technology, the demand for high-quality, low-cost metal powder is increasing. The development of high-performance nickel-based superalloy 3D printing technology for aerospace is limited by the "weldability" of nickel-based superalloy and the quality of its powder. At present, the nickel-based superalloys used for 3D printing are mainly IN718, IN625, etc., which have good 3D printing forming properties, but their overall performance is worse than that of powdered nickel-based superalloys. Due to the high content of Al and Ti in the powdered nickel-based superalloy, the crack sensitivity is high, and cracks are prone to occur during the 3D printing process, which brings great challenges to the 3D p...

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
IPC IPC(8): C22C19/05C22C30/00B22F1/00B22F9/08B33Y70/00
CPCC22C19/056C22C30/00B22F9/082B33Y70/00B22F2009/0836B22F2009/0848B22F2009/0896B22F1/065B22F10/28B33Y10/00C22C1/0433B22F1/05B22F2009/0824B22F2009/0844B22F2999/00B22F10/36B22F10/366B33Y50/02Y02P10/25B22F2201/20B22F2202/07B22F2201/10B22F2201/11B22F2201/12B22F2202/01B33Y40/10
Inventor 刘祖铭魏冰农必重吕学谦任亚科曹镔艾永康
Owner CENT SOUTH UNIV
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Try Eureka
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap