Medium entropy alloy material for additive manufacturing and application method of medium entropy alloy material

A technology of additive manufacturing and application method, applied in the field of additive manufacturing, can solve the problems of poor matching of strength and toughness of high-entropy alloys, difficult to maintain the original structure, difficult to achieve industrialization, etc., to achieve low cost and prevent the formation of brittle mesophases , Environmentally friendly effect

Active Publication Date: 2019-07-05
SHANGHAI JIAO TONG UNIV +1
View PDF7 Cites 17 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0007] In view of the above-mentioned defects of the prior art, the technical problem to be solved by the present invention is that the artificial introduction of other phases in the medium-entropy alloy leads to the generation of more brittle intermediate phases for additive manufacturing, which is difficult to produce under the large undercooling degree produced by additive manufacturing

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
  • Medium entropy alloy material for additive manufacturing and application method of medium entropy alloy material
  • Medium entropy alloy material for additive manufacturing and application method of medium entropy alloy material

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0031] The powdered medium entropy alloy with a particle size of 0-25 μm is used, and the drug powder formula is Cr50%, Co30%, Ni20%, and the additive manufacturing is carried out. The steps are as follows:

[0032] Step 1) Select a 115mm×115mm stainless steel substrate and clean it until it is clean, free of oil, dust, rust, etc.;

[0033] Step 2) Use an industrial robot to carry a laser, and connect the laser cladding powder feeding system for the selected area in parallel. Dry and sieve the powder and fill it into the powder spreading system, and at the same time, the scraper in the powder spreading system spreads the first layer of powder on the substrate;

[0034] Step 3) Establish a 3D model of a cube array with a side length of 20mm to be printed in the software, convert it into a robot scanning path file, and input it into the robot control computer;

[0035] Step 4) Scan with a given path at a scanning speed of 800mm / s, a scanning distance of 0.03mm, a power of 160W,...

Embodiment 2

[0039] In this example, a powdered medium-entropy alloy with a particle size of 15-53 μm is used, and the powder formula is Cr33%, Co33%, and Ni34%, for additive manufacturing. The steps are as follows:

[0040] Step 1) Select a 115mm×115mm stainless steel substrate and clean it until it is clean, free of oil, dust, rust, etc.;

[0041] Step 2) Use an industrial robot to carry a laser, and connect the laser cladding powder feeding system for the selected area in parallel. Dry and sieve the powder and fill it into the powder spreading system, and at the same time, the scraper in the powder spreading system spreads the first layer of powder on the substrate;

[0042] Step 3) Establish a 3D model of a cylindrical array with a radius of 5mm and a height of 10mm to be printed in the software, convert it into a robot scanning path file, and input it into the robot control computer;

[0043] Step 4) According to the scanning speed of 1000mm / s, the scanning distance of 0.04mm, the po...

Embodiment 3

[0047] In this example, a powdered medium-entropy alloy with a particle size of 53-150 μm is used. The powder formula is Cr20%, Co50%, and Ni30%, and the additive manufacturing is carried out. The steps are as follows:

[0048] Step 1) Select a titanium substrate of 200mm×150mm, and clean it until it is clean, free of oil, dust, rust, etc.;

[0049] Step 2) Use an industrial robot to carry a laser, and connect the selected area laser cladding powder feeding system in parallel, dry and sieve the alloy powder and fill it into the powder feeding system;

[0050] Step 3) Establish a 3D model of a cube array with a side length of 20mm to be printed in the software, convert it into a robot scanning path file, and input it into the robot control computer;

[0051] Step 4) According to the scanning speed of 700mm / s, the scanning distance of 3.0mm, the power of 3500W, the laser spot diameter of 2mm, and the layer thickness of 0.5mm, scan with a given path to form a molten pool; at the sa...

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

No PUM Login to view more

Abstract

The invention discloses a medium entropy alloy material for additive manufacturing and an application method of the medium entropy alloy material, and relates to the field of additive manufacturing. The medium entropy alloy material for additive manufacturing is characterized in that the material components comprise Cr, Co and Ni, and the atomic percentages are separately 20%-50%. The applicationmethod comprises the following steps that a metal substrate with appropriate size is selected, each component is melted by using a heat source, a scanning path file of a 3D model of a workpiece is input into a robot control computer to scan in a given path, the workpiece is separately from the substrate by using wire cutting after all scanning and cooling, and the workpiece is cleaned, shined andpolished. According to the medium entropy alloy material for additive manufacturing and the application method of the medium entropy alloy material, the strong solid solution strengthening effect in amedium entropy alloy is utilized to obtain a printed workpiece with high strength and good toughness matching, and meanwhile, the diffusion retardation effect is utilized to delay or even prevent thediffusion of substrate materials and prevent the formation of various brittle mesophase; and meanwhile, less elements are involved, simple preparation and easy realization of industrial production are achieved, and the medium entropy alloy material for additive manufacturing and the application method of the medium entropy alloy material have the advantages of low cost, environmental friendlinessand the like.

Description

technical field [0001] The invention belongs to the field of additive manufacturing, and relates to a medium-entropy alloy material for additive manufacturing and an application method. Background technique [0002] High Entropy Alloy (HEA) is a branch of multi-principal alloy, which means a single-phase alloy composed of five or more elements. In high-entropy alloys, a variety of atomic radii are different, which brings great lattice distortion and makes the diffusion of atoms extremely difficult. This is the so-called "diffusion retardation" effect. At the same time, a variety of atoms contained in the high-entropy alloy form a single-phase solid solution, which has a strong solid-solution strengthening effect. As a result, materials made from high-entropy alloys can achieve high strength without machining. In addition, there are many core effects in high-entropy alloys, such as "high-entropy effect", "cocktail effect", and "lattice distortion effect", which determine th...

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): C22C30/00B22F3/105B23K9/04B33Y10/00B33Y70/00
CPCC22C30/00B23K9/044B33Y10/00B33Y70/00B22F10/00B22F10/66B22F10/22B22F10/25B22F10/36B22F10/366B22F10/68Y02P10/25
Inventor 冯凯李铸国王志远韩帛伦
Owner SHANGHAI JIAO TONG 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