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

Method for preparing metal gradient material through selective laser melting

A technology of selective laser melting and gradient materials, applied in the field of additive manufacturing, can solve the problems of complex process equipment and high cost, and achieve the effect of improving performance, low cost and reducing raw material cost

Active Publication Date: 2020-11-27
CENT SOUTH UNIV
View PDF8 Cites 6 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] In order to solve the problems of complex process and equipment and high cost in the traditional preparation method of metal gradient materials, the present invention provides an efficient and simple preparation technology of metal gradient materials

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 metal gradient material through selective laser melting
  • Method for preparing metal gradient material through selective laser melting

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0053] The René 104 nickel-based superalloy powder with a particle size of 15-53 μm is used as the raw material. The composition of the René 104 nickel-based superalloy is: 20.6Co~13Cr~3.4Al~3.9Ti~3.8Mo~2.1W~2.4Ta~0.9Nb~ 0.05Zr~0.03B~0.04C~the balance is Ni. Include the following steps:

[0054] (1) According to the service environment, design the microstructure of different partitions of the metal gradient material, thereby dividing the workpiece model into 3 partitions, from 1 partition to 3 partitions, the grain size gradually becomes smaller;

[0055] (2) Establish three-dimensional computer models of three different partitions, and then assemble them into a three-dimensional model of the overall part. The partitions are overlapped with each other, and the width of the overlapping zone is designed to be the width of a molten pool;

[0056] (3) According to the microstructure characteristics of the three different partitions, set the 3D printing parameters and scanning pat...

Embodiment 2

[0064] The René 104 nickel-based superalloy powder with a particle size of 15-53 μm is used as the raw material. The composition of the René 104 nickel-based superalloy is: 20.6Co~13Cr~3.4Al~3.9Ti~3.8Mo~2.1W~2.4Ta~0.9Nb~ 0.05Zr~0.03B~0.04C~the balance is Ni. Include the following steps:

[0065] (1) When designing the microstructure of the metal gradient material into 3*2 different partitions, control the laser power of the first partition to the third partition to be 400, 300, 200W respectively, and the laser scanning speed to be 800mm / s, 900mm / s, 1000mm / s;

[0066] (2) Establish three-dimensional computer models of three different partitions, and then assemble them into a three-dimensional model of the overall part. The different partitions are overlapped with each other, and the width of the overlapping area is the width of a molten pool; the first partition is and the substrate The contact area; the second division is located between the first division and the third divi...

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 diameteraaaaaaaaaa
microhardnessaaaaaaaaaa
microhardnessaaaaaaaaaa
Login to View More

Abstract

The invention provides a method for preparing a metal gradient material through selective laser melting. The method comprises the steps that selective laser melting is carried out on a same-componentmetal material to prepare a structural gradient material, 3D printing parameters of different partitions of a printing element are precisely controlled through a computer, structural gradient distribution of different partitions of the same-component material is realized, then the metal material with a gradient structure is integrally and quickly formed, the performance of the material is greatlyimproved, and performance requirements that a single-component metal material cannot meet are met. The method can be used for customizing microstructures of the metal gradient material according to service environments, and has high flexibility in material composition, structure, performance and appearance size control. Through reasonable structural design, material selection and process matching,a flexible intelligent manufacturing technology integrating material design, preparation, forming and structure performance control can be developed, the technology is simple and efficient, the costis low, and a significant technical advantage is achieved in the direct forming aspect of novel gradient structures.

Description

technical field [0001] The invention provides a method for preparing a metal gradient material by selective laser melting, which belongs to the field of additive manufacturing. Background technique [0002] Gradient materials are a new type of material / structure developed to break through the performance limitations of a single homogeneous material and combine the needs of practical applications and the performance characteristics of different materials. Through advanced material preparation technology, the internal structure and composition of metal gradient materials show gradient changes without obvious interface changes, thereby greatly improving the performance of materials and achieving performance requirements that cannot be met by a single metal. Biomedicine and other fields have important development and application prospects. At present, the preparation technologies of gradient materials mainly include powder metallurgy, plasma spraying, self-propagating high-temp...

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): B22F3/105B33Y10/00B33Y50/02B33Y70/00C22C19/05
CPCB22F2207/01B33Y10/00B33Y50/02B33Y70/00C22C19/056
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 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