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Post-treatment method for precipitation strengthening metal additive manufacturing thin-wall component without solid solution

A thin-walled component and metal additive technology, which is applied in the direction of manufacturing tools, additive manufacturing, additive processing, etc., can solve problems such as deformation, and achieve the effects of reducing energy consumption, accelerating precipitation behavior, and shortening time

Active Publication Date: 2022-04-15
XI AN JIAOTONG UNIV
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, none of the above heat treatment methods can solve the deformation problem caused by high temperature solid solution and quenching process in the post-processing of additive manufacturing components.

Method used

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  • Post-treatment method for precipitation strengthening metal additive manufacturing thin-wall component without solid solution
  • Post-treatment method for precipitation strengthening metal additive manufacturing thin-wall component without solid solution
  • Post-treatment method for precipitation strengthening metal additive manufacturing thin-wall component without solid solution

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Embodiment 1

[0022] Embodiment 1, with reference to figure 1 , a solution-free precipitation strengthening metal additive manufacturing thin-walled component post-processing method, comprising the following steps:

[0023] Step 1. Additive manufacturing of thin-walled components:

[0024] In this embodiment, computer CAD software is used for three-dimensional modeling to obtain a thin-walled component with a size of 100mm*5mm*50mm, and the model is layered and path-planned using the slice layer software of the arc fuse metal additive manufacturing system;

[0025] Carry out the arc fuse additive manufacturing process, choose 2319 aluminum alloy wire as the raw material, the diameter of the wire is 1.2mm, the shielding gas is argon, and a well-formed thin-walled component with a thickness of 5mm, a height of 30mm, and a length of 80mm is obtained. After the fabrication is completed, there are a small amount of dislocations and precipitated phases inside the thin-walled components, such as ...

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Abstract

The invention discloses a solid-solution-free post-treatment method for precipitation-strengthened metal additive manufacturing of a thin-wall component. The thin-wall component is firstly formed through additive manufacturing; performing laser shock peening on the surface of the thin-wall component, selecting a high-energy pulse laser as an energy source, and adding a restraint layer and an absorption layer; then, multi-energy-field composite aging treatment is conducted on the surface of the thin-wall component; and finally, the surface of the thin-wall component is subjected to laser shock peening again. According to the method, dislocation strengthening generated by laser shock and the promoting effect of the dislocation strengthening generated by laser shock on precipitation strengthening in the aging process are combined, deformation caused by high-temperature solid solution is avoided, and meanwhile the performance such as the strength of the additive manufacturing component is improved.

Description

technical field [0001] The invention relates to the technical field of laser shock strengthening, in particular to a post-treatment method for thin-walled components manufactured by precipitation strengthening metal additive manufacturing without solid solution. Background technique [0002] At present, before the official service of additively manufactured components, it is often necessary to release the internal stress of the deposited components during the forming process by means of stress relief annealing, etc. , the solid solution-aging process is required to precipitate dispersed second-phase particles, so as to synergistically improve the strength, toughness and corrosion resistance of additively manufactured components. However, due to the high temperature in the solution-quenching process and the need for quenching after the completion of the solution, combined with the large residual tensile stress in the formed component itself, the solution-quenching process may...

Claims

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Application Information

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IPC IPC(8): C21D10/00C21D1/04C21D9/00B33Y10/00B33Y40/20B22F10/28B22F10/20B22F10/64C22F1/057C22F3/00
CPCY02P10/25
Inventor 黄科井龑东刘怡常天行方学伟
Owner XI AN JIAOTONG UNIV
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