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Preparation method of multi-component new alloy and component gradient alloy material part

A technology of alloy materials and composition gradients, which is applied in the field of additive manufacturing, can solve problems affecting the uniformity of formed parts, differences in mixed components, and severe material evaporation, so as to eliminate composition segregation, reduce the probability of forming defects, and improve material utilization. high rate effect

Active Publication Date: 2021-06-11
浙江智熔增材制造技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

Due to the difference in the physical properties of wires of different components, when the wires of different components are fed at the same time, it is difficult to control the materials with large differences in melting point to be melted at the same position and enter the molten pool together. Under the rapid melting characteristics of the pool, the mixing time of the materials of each component in the molten pool is short after melting, which ultimately affects the uniformity of the microstructure in the corresponding deposition area of ​​the formed part; Causes material to evaporate violently and thus deviates significantly from expected mix composition

Method used

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  • Preparation method of multi-component new alloy and component gradient alloy material part
  • Preparation method of multi-component new alloy and component gradient alloy material part
  • Preparation method of multi-component new alloy and component gradient alloy material part

Examples

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Embodiment 1

[0030] A method for preparing a multi-component new alloy material piece, comprising the steps of:

[0031] (1) Send two or more wires with different metal components into the fuse additive equipment at the same time, and form a molten pool on the substrate through a heat source;

[0032] (2) On the basis of the pre-composition group design and the analysis of the physical characteristics of various metal wires, by controlling the diameter range of different component wires, the distance between various wires, the distance between the wire and the substrate, and the The feed speed of the wire material is controlled by the parameter program of the forming process, so that the high melting point component wire is used as the main object of the heat source melting, and a molten drop is formed first, and is attached to the tip of the wire through surface tension, while a relatively low melting point is used. The tip of the wire material of the component contacts the droplet of the...

Embodiment 2

[0039] (1) Install the aluminum wire, titanium wire and niobium wire in the three wire feeding channels of the additive manufacturing machine, and adjust the phase relationship of the three wires so that the aluminum wire is placed at the bottom and the niobium wire is placed at the top. The titanium wire is placed between the aluminum wire and the niobium wire, and the distance between the aluminum wire and the titanium wire and between the titanium wire and the niobium wire does not exceed the diameter of the wire;

[0040] (2) Install the titanium alloy substrate, adjust the height of the substrate so that the distance between the end of the lowest aluminum wire and the substrate is 2-5 times the diameter of the wire;

[0041] (3) When the vacuum reaches the set value, electrons are emitted from the electron gun to irradiate the titanium substrate to form a local molten pool;

[0042] (4) Feed niobium wire, titanium wire and aluminum wire at the same time. The feeding speed...

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Abstract

The invention provides a preparation method of a multi-component new alloy and a component gradient alloy material part. Material-forming integration is achieved, and intermediate steps are reduced. According to the method, heterogeneous materials with variable components, gradient and the like are easily realized; compared with powder, wires are used, the material utilization rate is high, and the forming efficiency is high; the wires made of two or more different materials are sequentially melted according to physical characteristics under the effect of a heat source to form a molten drop, then the molten drop is transited to a base body, all components can be uniformly mixed, component segregation can be reduced or even eliminated, the uniformity of a new alloy material in the forming process can be effectively controlled, the stability of the molten drop transition form is higher, and the probability of forming defects is effectively reduced.

Description

technical field [0001] The invention relates to the technical field of additive manufacturing, in particular to a method for preparing a multi-component new alloy and a composition gradient alloy material piece. Background technique [0002] In recent years, the development of additive manufacturing technology has provided a new possibility for the preparation technology of alloy materials. Additive Manufacturing (AM) technology is an emerging technology based on the principle of discrete-stacking, which manufactures entities by layer-by-layer layering of materials. In terms of metal material processing, there are mainly two types of technologies: powder bed fusion technology (PBF) and directed energy deposition technology (DED). Among them, directed energy deposition technology is considered to be a very potential method for the preparation of new multi-component alloy materials. [0003] Directed energy deposition technology refers to the additive manufacturing process t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B23K9/04B23K15/00B23K26/34
CPCB23K15/0086B23K26/34B23K9/04
Inventor 郭光耀穆成成李晋炜马新年李培根
Owner 浙江智熔增材制造技术有限公司
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