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

Nickel-based alloy/aluminum alloy or aluminum dissimilar material laser welding method

A technology of nickel-based alloys and dissimilar materials, applied in laser welding equipment, welding equipment, metal processing equipment, etc., can solve the problems of weld brittle fracture, penetrating cracks, uneven distribution of brittle intermetallic compounds, etc. Effect of chemical composition, relieving internal stress, improving weld forming quality and weldability

Pending Publication Date: 2022-05-17
ANYANG INST OF TECH
View PDF0 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Aiming at the uneven distribution of brittle intermetallic compounds on the direct butt welding interface of nickel-based alloy / aluminum alloy dissimilar materials, penetrating cracks will occur immediately after welding, resulting in direct brittle fracture of the weld

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 alloy/aluminum alloy or aluminum dissimilar material laser welding method
  • Nickel-based alloy/aluminum alloy or aluminum dissimilar material laser welding method
  • Nickel-based alloy/aluminum alloy or aluminum dissimilar material laser welding method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] Such as figure 1 As shown, firstly, the surface of nickel-based alloy plates 1 and 3 and aluminum alloy plate 2 is treated before welding to remove pollutants, and the surface roughness is 4-6um. The nickel-based alloy plates 1 and 3 have the same material and size, and the nickel-based alloy plates 1 and 3 and the aluminum alloy plate 2 have the same length. The aluminum alloy thin plate 2 is horizontally placed on the step layer of the nickel-based alloy plate 3, the step layer of the nickel-based alloy plate 1 is placed on the aluminum alloy thin plate 2, and the two nickel-based alloy plates 1 and 3 are butted. The assembly fixture is used to fix, closely contact, reduce the assembly gap, and form a two-metal three-layer composite structure of nickel-based alloy plate 1-aluminum alloy plate 2-nickel-based alloy plate 3 from top to bottom.

[0026] Secondly, the center 4 of the laser beam spot is located on the side of the nickel-based alloy 3 , offset by a certain ...

Embodiment 2

[0030] The welding method of this embodiment is basically the same as that of Embodiment 1, except that the distance d between the laser beam and the center line of the upper surface in this embodiment is 0.5 mm. Test the tensile properties of the welded joints. The fracture position of the sample is located on the side of the weld between the upper nickel-based alloy and the middle aluminum alloy. The tensile strength of the joint at room temperature reaches 171-184MPa.

Embodiment 3

[0032] The welding method of this embodiment is basically the same as that of Embodiment 1, except that the laser power in this embodiment is 2.3kW, and the welding speed is 0.8m / min. Test the tensile properties of the welded joints. The fracture position of the sample is located on the side of the weld between the upper nickel-based alloy and the middle aluminum alloy. The tensile strength of the joint at room temperature reaches 159-171MPa.

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
Tensile strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Tensile strengthaaaaaaaaaa
Login to View More

Abstract

The invention discloses a nickel-based alloy / aluminum alloy or aluminum dissimilar material laser welding method, and belongs to the technical field of laser welding. Through the measures of double-metal three-layer composite structure design, laser beam spot position adjustment, laser power and welding speed optimization and the like, laser energy is reasonably distributed, the dilution rate of nickel-based alloy / aluminum alloy dissimilar materials is controlled, diffusion of thin plate aluminum alloy elements to a nickel-based alloy molten pool is reduced, and the welding quality of the nickel-based alloy / aluminum alloy dissimilar materials is improved. The growth behavior of a multi-component asymmetric and unbalanced melt interface layer and the non-uniformity of a chemical metallurgical reaction are improved, nucleation and growth of harmful Ni-Al brittle hard intermetallic compounds in a middle transition layer of a composite structure reaction interface are inhibited, the number of face-centered cubic structure nickel-based solid solutions is increased, the interface internal stress in the solidification process is relieved, and the surface-centered cubic structure nickel-based solid solutions are formed. The problem of brittle fracture of welding seams of two materials is solved. The fusion depth is increased, meanwhile, the contradiction of excessive aluminum melting is avoided, the multi-layer light weight of the structure and the stable joint structure performance are considered, and technical guidance is provided for the aerospace and ship building process.

Description

technical field [0001] The invention belongs to the technical field of laser welding, and in particular relates to a laser welding method for a transition joint of a nickel-based alloy / aluminum alloy or aluminum dissimilar material composite plate structure, which can be used in industrial application fields such as aerospace and shipbuilding. Background technique [0002] In order to take into account cost, quality and safety, and give full play to the advantages of material performance, the welding of nickel-based alloys and aluminum alloy dissimilar materials is an important development trend of lightweight engineering material structures in aviation, aerospace, automotive, microelectronics and petrochemical manufacturing industries, which can realize energy saving. Environmental friendly. At present, the same material welding technology of nickel-based alloys and aluminum alloys mainly includes fusion welding methods such as arc welding, electron beam welding, laser weld...

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): B23K26/00B23K26/04B23K26/323B23K26/60B23K26/70
CPCB23K26/60B23K26/0006B23K26/323B23K26/702B23K26/04
Inventor 高志国
Owner ANYANG INST OF TECH
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