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A kind of Al-mg-Si alloy wire material and preparation method thereof for additive manufacturing

An alloy wire and additive manufacturing technology, which is applied in the field of Al-Mg-Si alloy wire for additive manufacturing and its preparation, can solve the problems of high thermal crack tendency, affecting the performance of high-strength aluminum alloy components, low alloy strength, etc. The effect of improved mechanical and physical properties

Active Publication Date: 2020-05-05
杭州坤利焊接材料有限公司
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Problems solved by technology

[0005] However, for high-strength aluminum alloys, there is still a problem of relatively high thermal crack tendency during the solidification process (additive manufacturing process), that is, obvious cracks will appear in high-strength aluminum alloys in laser-arc composite additive manufacturing, and there are still alloys after solidification The problem of low strength, which seriously affects the performance of high-strength aluminum alloy components

Method used

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  • A kind of Al-mg-Si alloy wire material and preparation method thereof for additive manufacturing
  • A kind of Al-mg-Si alloy wire material and preparation method thereof for additive manufacturing
  • A kind of Al-mg-Si alloy wire material and preparation method thereof for additive manufacturing

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preparation example Construction

[0058] A preparation method of Al-Mg-Si alloy wire rod for additive manufacturing, comprising the following steps:

[0059] Step 1: Prepare 92.8Kg of TiB generated in situ 2 Granular Al-2.3Ti-B master alloy, in which TiB 2 The particle size is mostly 2-5μm, and after severe plastic deformation, it contains nano-TiB 2 Granular Al-2.3Ti-B master alloy, in which nano-TiB 2 The particle size is 50-1000nm.

[0060] Among them, severe plastic deformation can adopt high-speed friction stirring process or equal channel angular extrusion process or high-pressure torsion process. process, the torsion range is 0.5 to 5 turns; the equal channel angular extrusion process, the channel angle is 90 to 120 degrees, and the number of cycles is 1 to 5 times; the high-speed friction stir process is used in this embodiment.

[0061] Step 2: the nano-TiB obtained in step 1 2 The granular Al-2.3Ti-B master alloy is used as the matrix raw material, and 1.2Kg of pure magnesium, 5.0Kg of Al-20Si m...

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Abstract

The invention relates to the technical field of metal material preparation, and specifically discloses an Al-Mg-Si alloy wire for additive manufacturing and a preparation method thereof. 2 The Al-Ti-B master alloy of the particles undergoes severe plastic deformation to obtain nano-TiB-containing 2 Granular Al‑Ti‑B master alloy; nano-TiB 2 Granular Al-Ti-B master alloy is used as the matrix raw material, and other metals or master alloys are added for melting to obtain alloy melt; the alloy melt is made into wire billet; the wire billet is subjected to hot rolling, drawing, intermediate annealing and surface treatment , to obtain nanometer and submicron scale TiB 2 Particle reinforced Al‑Mg‑Si alloy wire. The Al-Mg-Si alloy wire prepared by this method can significantly refine the alloy structure after melting, reduce the sensitivity to solidification hot cracks, and can significantly improve the as-cast strength of the alloy, and can be used for additive manufacturing and welding of high-strength alloy structural parts.

Description

technical field [0001] The invention relates to the technical field of metal material preparation, in particular to an Al-Mg-Si alloy wire for additive manufacturing and a preparation method thereof. Background technique [0002] Additive manufacturing, commonly known as 3D printing, laser additive manufacturing technology is a type of 3D printing, which uses lasers as heat sources to construct entities through layer-by-layer manufacturing; laser additive manufacturing technology uses laser solid forming (laser solidforming, LSF) and selective laser melting (selective laser melting, SLM) are relatively mature, and both of these two processes are manufactured with metal (non-metal, metal matrix composite) powder as raw material. [0003] Aluminum alloy has the advantages of good electrical and thermal conductivity, high strength-to-mass ratio, corrosion resistance and damage resistance, and is widely used in aerospace, rail transit, automobile and many other fields, but compa...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C21/02C22C21/08C22C32/00C22C1/10C22F1/043C22F1/047C22F1/05
CPCC22C21/02C22C21/08C22C32/0073C22C1/1036C22C1/1005C22F1/043C22F1/047C22F1/05C22C1/12C22C1/1073
Inventor 陈继强李奇龙刘超齐亮赵鸿金
Owner 杭州坤利焊接材料有限公司
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