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A kind of preparation method and application of magnesium alloy additive manufacturing wire containing three-dimensional network graphene

An additive manufacturing, three-dimensional network technology, applied in the direction of additive processing, process efficiency improvement, energy efficiency improvement, etc., can solve the problems of magnesium evaporation, poor stability of molten pool, etc. performance, avoiding the effect of molten pool instability

Active Publication Date: 2022-07-05
HARBIN INST OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, the current alloying method is difficult to change the fluidity of the magnesium alloy melt, which leads to the poor stability of the molten pool during additive manufacturing and the rapid evaporation of magnesium.

Method used

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  • A kind of preparation method and application of magnesium alloy additive manufacturing wire containing three-dimensional network graphene
  • A kind of preparation method and application of magnesium alloy additive manufacturing wire containing three-dimensional network graphene
  • A kind of preparation method and application of magnesium alloy additive manufacturing wire containing three-dimensional network graphene

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specific Embodiment approach 1

[0019] Specific embodiment 1: a preparation method of a magnesium alloy additive manufacturing wire containing three-dimensional network graphene of the present embodiment, which comprises the following steps:

[0020] 1. Select the magnesium alloy system, and heat and melt the alloy at a temperature 30-100 °C higher than the melting point of the alloy;

[0021] 2. Adjust the temperature of the magnesium melt to the range of 640-700 °C, and adjust the flow rate of CO with a flow rate of 0.1-5L / min. 2 The gas is introduced into the magnesium alloy melt, the temperature is kept stable during this process, and carbon dioxide is converted into graphene. In order to make the graphene form a three-dimensional network structure of mutual cross-linking inside the material, it is necessary to ensure that the graphene is kept high in the magnesium alloy. (1-10wt.%), so that the magnesium alloy melt is transformed from a liquid state to a semi-solid state and has the characteristics of a...

specific Embodiment approach 2

[0024] Embodiment 2: The difference between this embodiment and Embodiment 1 is that the alloying elements in the magnesium alloy system are aluminum, zinc, calcium, manganese, copper or zirconium. Others are the same as the first embodiment.

specific Embodiment approach 3

[0025] Embodiment 3: The difference between this embodiment and Embodiment 1 is that the magnesium alloy is ZK61 magnesium alloy. Others are the same as the first embodiment.

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Abstract

A preparation method and application of magnesium alloy additive manufacturing wire containing three-dimensional network graphene, which relate to the preparation method and application of magnesium alloy additive manufacturing wire. In the present invention, in order to solve the problem that the viscosity of magnesium alloy is too low in the process of additive manufacturing of magnesium and magnesium alloy, the molten pool is unstable and the forming ability is affected. The casting method produces a certain amount of graphene in the magnesium alloy melt, and when the graphene volume fraction is high enough, the graphene forms a three-dimensional network structure of mutual cross-linking inside the material. The composite ingot is then extruded or drawn into AM wire of the desired diameter. The method of the invention is a simple process, low cost, and can be applied to a new type of magnesium alloy additive manufacturing wire for large-scale industrial production. The invention is applied to the field of non-ferrous metal material manufacturing.

Description

technical field [0001] The invention relates to the field of non-ferrous metal material manufacturing, in particular to a preparation method and application of a wire for magnesium alloy additive manufacturing. Background technique [0002] Magnesium alloys have the advantages of low density, high specific strength, and good biocompatibility, and have broad application prospects in the automotive, aerospace, and medical industries. When magnesium alloys are formed in the face of complex shapes, due to their close-packed hexagonal crystal structure, there are fewer slip systems that can be independently actuated at room temperature, resulting in poor plastic deformation ability of magnesium alloys. Additive manufacturing technology can solve this problem very well. However, due to the active chemical properties of magnesium and its relatively high vapor pressure, the use of magnesium powder for additive manufacturing has a high risk of safety accidents. Therefore, the use o...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C1/10C22C23/00B21C23/02B33Y70/00
CPCC22C1/1031C22C23/00B21C23/02B33Y70/00Y02P10/25
Inventor 王晓军李雪健徐红伟金宇超栾鹏
Owner HARBIN INST OF TECH