Aluminum matrix composite welding wire for electric arc additive manufacturing and preparation method thereof

An aluminum matrix composite material and composite material technology, applied in the field of aluminum matrix composite material welding wire and its preparation, can solve the problems of difficult heat treatment of large components, limit the application of arc additive manufacturing technology, and poor mechanical properties of printed parts, so as to suppress crystal The effect of grain growth, inhibition of dendrite formation, and improvement of strength and plasticity

Active Publication Date: 2021-03-05
迈特李新材料(深圳)有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the types of aluminum alloy welding wires that can be used for arc additive manufacturing are currently limited. After the existing aluminum alloy welding wires are made into products through arc additive manufacturing, the mechanical properties of the printed parts are poor (such as 5xxx series aluminum alloy welding wires) or after printing Heat treatment is required to improve the mechanical properties of parts (such as 2xxx series aluminum alloy welding wire)
This severely limits the application of arc additive manufacturing technology in the manufacture of large aluminum alloy components, because large components are often difficult to carry out overall heat treatment

Method used

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  • Aluminum matrix composite welding wire for electric arc additive manufacturing and preparation method thereof
  • Aluminum matrix composite welding wire for electric arc additive manufacturing and preparation method thereof

Examples

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Effect test

Embodiment 1

[0031] An aluminum-based composite material welding wire for arc additive manufacturing, the composite material welding wire includes a matrix alloy and a nano-reinforcement phase distributed in the matrix alloy, and the matrix alloy contains the following components in mass percentage: Mg6. 5%, Cu 1.4%, Mn 0.8%, the balance is Al; the nano-enhanced phase is TiB 2 The particle size is 50-150nm, and its mass fraction in the composite material is 1.5%.

[0032] The preparation method of the aluminum-based composite material welding wire in this embodiment is: according to the composition of the matrix alloy and the TiB 2 Pure Al, pure Mg, pure Cu, Al-Mn master alloy and TiB required for particle mass fraction calculation 2 the quality of the particles. Melt pure Al at a temperature of 800°C, then add TiB 2 A mixture of granules and salt, where the salt consists of MgF 2 27wt.%, CaF 2 21wt.% and BaF 2 52 wt.%. After the salt is melted, the melt is mechanically stirred at...

Embodiment 2

[0034] An aluminum-based composite material welding wire for arc additive manufacturing, the composite material welding wire includes a matrix alloy and a nano-reinforcement phase distributed in the matrix alloy, and the matrix alloy contains the following components in mass percentage: Mg7. 5%, Cu 1.8%, Mn 0.8%, and the balance is Al; the nano reinforcement phase is TiC particles with a size of 40-200nm, and its mass fraction in the composite material is 1.0%.

[0035] The preparation method of the aluminum-based composite welding wire in this example is as follows: calculate the required mass of pure Al, pure Mg, pure Cu, Al-Mn master alloy and TiC particles according to the composition of the matrix alloy and the mass fraction of TiC particles. Melt pure Al at a temperature of 700°C, then add a mixture of TiC particles and salt, where the composition of the salt is KCl 54wt.%, NaCl 12wt.%, and NaF 4wt.%, CaCl 2 30 wt.%. After the salt is melted, the melt is mechanically s...

Embodiment 3

[0037] An aluminum-based composite material welding wire for arc additive manufacturing, the composite material welding wire includes a matrix alloy and a nano-reinforcement phase distributed in the matrix alloy, and the matrix alloy contains the following components in mass percentage: Mg9. 0%, Cu 2.5%, Mn 1.0%, and the balance is Al; the nano reinforcement phase is TiC particles with a size of 40-200nm, and its mass fraction in the composite material is 1.0%.

[0038] The preparation method of the aluminum-based composite welding wire in this example is as follows: calculate the required mass of pure Al, pure Mg, pure Cu, Al-Mn master alloy and TiC particles according to the composition of the matrix alloy and the mass fraction of TiC particles. Melt pure Al at a temperature of 720°C, then add a mixture of TiC particles and salt, where the composition of the salt is KCl 54wt.%, NaCl 12wt.%, and NaF 4wt.%, CaCl 2 30 wt.%. After the salt is melted, the melt is mechanically s...

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Abstract

The invention relates to an aluminum matrix composite welding wire for electric arc additive manufacturing. The welding wire comprises a matrix alloy and a nano reinforced phase distributed in the matrix alloy, the matrix alloy is prepared from, by mass, 5.0%-15.0% of Mg, 0.2%-3.0% of Cu, 0.1%-1.0% of Mn and the balance of Al, the nano reinforced phase is nanoparticles, nanowires, nanotubes or nanofibers, and the material of the nano reinforced phase is ceramic, an intermetallic compound or metal. The components of the aluminum alloy welding wire are reasonably designed, the nanoparticles areintroduced and used for the electric arc additive manufacturing, a component obtained through printing can obtain good mechanical performance without heat treatment, and therefore application of the electric arc additive manufacturing technology in the aluminum alloy field is expanded.

Description

technical field [0001] The invention relates to an aluminum-based composite material welding wire for arc additive manufacturing and a preparation method thereof, belonging to the technical fields of metal materials, additive manufacturing materials, and material preparation. Background technique [0002] Aluminum alloy has the advantages of high specific strength, specific stiffness, fatigue strength and excellent corrosion resistance. It is the material of choice for realizing lightweight structures and has broad applications in aerospace, automotive transportation and other fields. Additive manufacturing, also known as 3D printing, is a new manufacturing technology that uses software to segment digital models of parts, and stacks materials layer by layer from two-dimensional outlines according to the segmentation information to produce three-dimensional solid parts. This technology has broad application prospects in the manufacture of aluminum alloy parts and has received...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K35/02B23K35/28B23K35/40C22C1/02C22C1/03C22C1/06C22C1/10C22C21/06C22C47/08C22C49/06C22C49/14C22F1/047
CPCB23K35/286B23K35/40B23K35/0261C22C21/06C22C49/06C22C49/14C22F1/047C22C1/03C22C1/026C22C1/06C22C1/1036C22C47/08C22C1/1047
Inventor 池元清刘伟清
Owner 迈特李新材料(深圳)有限公司
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