Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Method for preparing nickel base alloy

A nickel-based alloy and alloy technology, which is applied in the field of laser cladding forming to prepare nickel-based alloys, can solve the problems of unsatisfactory requirements, powder work hardening, poor powder fluidity, etc., and achieves strong designability, high density and low cost. Effect

Active Publication Date: 2020-11-13
UNIV OF SCI & TECH BEIJING +1
View PDF5 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

When preparing ODS nickel-based alloys by mechanical alloying process, Al, Ti, Cr and other elements are easily oxidized in the process of mechanical alloying, which reduces the final alloy properties
At the same time, during the high-energy ball milling process, the powder, the ball milling medium and the ball milling tank will collide at high speed, and the long-term ball milling will cause the elements in the ball milling medium and the ball milling tank to be introduced into the target powder to cause pollution, which will affect the final material properties
Finally, the powder obtained by mechanical alloying is severely work-hardened, and most of them are irregularly shaped powders with poor powder fluidity. Only some special methods can be used, such as jacketed hot extrusion, jacketed hot isostatic pressing or spark plasma sintering. Can not meet the powder requirements of laser cladding forming technology

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
  • Method for preparing nickel base alloy

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0049] Element

[0050] Ni-12wt.%Cr-6wt.%Al-1wt.%Ti-4wt.%Mo-2wt.%Nb-0.25wt.%La 2 o 3 Preparation of nickel base alloy

[0051] Argon atomized powder and nano La 2 o 3 The powder is weighed with a weight ratio of 99.75:0.25 for later use. Dissolve the weighed argon atomized powder of Ni-12wt.%Cr-6wt.%Al-1wt.%Ti-4wt.%Mo-2wt.%Nb in 5g·L -1 Polydiallyldimethylammonium chloride solution, soaked for 15 minutes, and then the nano-La 2 o 3 The powder was added into the solution and stirred for 1.5 hours, and then the solution was dried to obtain a powder precursor. Stir the powder precursor for 1 hour in an argon atmosphere at a temperature of 320° C. and a stirring propeller rotation speed of 20,000 rpm to obtain nano-oxide-coated nickel-based alloy powder. Finally, the nickel-based alloy powder is wrapped with nano-oxide for laser cladding forming. The forming parameters are powder coating thickness 0.03mm, scanning speed 1000mm / s, and scanning distance 0.05mm to obtain ODS ...

Embodiment 2

[0053] Element

[0054] Ni-18wt.%Cr-21wt.%Fe-1wt.%Co-0.6wt.%Al-1wt.%Ti-3wt.%Mo-5wt.%Nb-0.4wt.%La 2 o 3 Preparation of nickel base alloy

[0055] Will be composed as

[0056] Argon atomized powder and nano La 2 o 3 The powder is weighed with a weight ratio of 99.6:0.4 for future use. Dissolve the weighed argon atomized powder of Ni-18wt.%Cr-21wt.%Fe-1wt.%Co-0.6wt.%Al-1wt.%Ti-3wt.%Mo-5wt.%Nb in 8g·L -1 Polydiallyldimethylammonium chloride solution, soaked for 30 minutes, and then the nano-La 2 o 3 After the powder was added into the solution and stirred for 2 hours, the solution was dried to obtain a powder precursor. Stir the powder precursor for 1 hour in an argon atmosphere at a temperature of 350° C. and a stirring propeller rotation speed of 25,000 rpm to obtain nano-oxide-coated nickel-based alloy powder. Finally, the nickel-based alloy powder is wrapped with nano-oxide for laser cladding forming. The forming parameters are powder coating thickness 0.05mm, scanni...

Embodiment 3

[0058] Composition Ni-20wt.%Cr-0.3wt.%Al-0.5wt.%Ti-0.1wt.%Fe-0.6wt.%Y 2 o 3 Preparation of nickel base alloy

[0059] Argon atomized powder and nano-Y 2 o 3 The powder is weighed with a weight ratio of 99.4:0.6 for future use. Dissolve the weighed Ni-20wt.%Cr-0.3wt.%Al-0.5wt.%Ti-0.1wt.%Fe argon atomized powder in 4g·L -1 cysteine ​​solution, soaked for 10 minutes, and then the nano-Y 2 o 3 After the powder was added into the solution and stirred for 2 hours, the solution was dried to obtain a powder precursor. Stir the powder precursor for 1 hour in an argon atmosphere at a temperature of 500° C. and a stirring propeller rotating at 20,000 rpm to obtain nano-oxide-coated nickel-based alloy powder. Finally, the nickel-based alloy powder is wrapped with nano-oxide for laser cladding forming. The forming parameters are powder coating thickness 0.03mm, scanning speed 2500mm / s, and scanning distance 0.03mm to obtain ODS nickel-based alloy products with the target shape.

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
thicknessaaaaaaaaaa
Login to View More

Abstract

The invention belongs to the field of advanced metal material preparation and research, and particularly provides a method for preparing a nickel base alloy by laser cladding forming. The method specifically includes the following steps of configuring precursor powder, wherein a solution of a proper concentration is prepared first, element-gas-atomization nickel base alloy powder is added to the solution to be impregnated for a certain period of time, nanometer Y2O3 or La2O3 powder is added to the solution to be stirred, and then the solution is dried; preparing nano oxide nickel base alloy powder, wherein the precursor powder obtained in last step is put into a high-speed stirring heating furnace to be stirred at a high speed at a certain temperature under atmospheric protection to obtainnano oxide clad nickel base alloy powder; and performing laser cladding on the nano oxide clad nickel base alloy powder to form oxide dispersion strengthening nickel bass alloy. The method provides anew concept for preparing the oxide dispersion strengthening nickel base alloy and has the advantages of being short in production cycle, low in cost, convenient to operate and the like.

Description

technical field [0001] The invention belongs to the research field of preparation of advanced metal materials, and in particular provides a method for preparing nickel-based alloys by adopting laser cladding forming. Background technique [0002] Nickel-based superalloys generally use the ordered phase γ′-Ni 3 Al undergoes precipitation precipitation strengthening. However, as the temperature increases, the γ′ phase will be coarsened and the strengthening effect will be weakened. When the temperature exceeds the dissolution temperature of the γ′ phase, the γ′ will re-dissolve in the austenite matrix, thus losing the effect of precipitation strengthening. Unlike the precipitation of precipitated phases, which are limited by the use temperature, nano-oxides have higher thermal stability and will not dissolve even when heated to a temperature close to the melting point of the alloy. Therefore, at 0.7T m It still has excellent high temperature creep performance, fatigue perfo...

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 Applications(China)
IPC IPC(8): C22C1/05C22C1/10C22C19/05C22C32/00
CPCC22C1/05C22C19/056C22C19/058C22C32/0026
Inventor 章林陈晓玮刘烨陈旭秦明礼曲选辉
Owner UNIV OF SCI & TECH BEIJING
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

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

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com