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A kind of crcuv solid solution for heterogeneous interface combination and its preparation method and application

A heterogeneous interface, solid solution technology, applied in welding equipment, manufacturing tools, welding media, etc., can solve the problems of reducing joint strength, reducing welding joint performance, affecting the strength of steel-aluminum dissimilar metals connection materials, etc., to achieve high connection Interfacial strength and hardness, the effect of reducing residual stress levels, and moderating thermal expansion coefficients

Active Publication Date: 2021-08-06
SUZHOU UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] At present, steel / aluminum heterogeneous parts are generally prepared by mechanical connection, welding, etc., but because Fe and Al atoms are infinitely soluble in the molten state, the solubility of Fe in Al at room temperature becomes almost zero. Fe will form brittle and hard intermetallic compounds with Al atoms, which will reduce the performance of welded joints, thereby affecting the strength of steel-aluminum dissimilar metal connection materials
In the traditional process, fusion welding joints have many advantages such as high strength, good flatness, and strong controllability of welding parameters. However, intermetallic compounds that reduce the joint strength will be produced during the welding process. Welding defects; mechanical connection has the advantages of simple process and guaranteed connection strength, but the airtightness of the joint cannot be guaranteed

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  • A kind of crcuv solid solution for heterogeneous interface combination and its preparation method and application
  • A kind of crcuv solid solution for heterogeneous interface combination and its preparation method and application
  • A kind of crcuv solid solution for heterogeneous interface combination and its preparation method and application

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preparation example Construction

[0043] The present invention also provides a method for preparing the above-mentioned CrCuV solid solution for heterogeneous interface bonding, which specifically includes the following process steps:

[0044] (1) Ingredients:

[0045] Use metal vanadium, metal chromium, and metal copper as raw materials, and prepare according to the target composition;

[0046] (2) Melting:

[0047] Put the prepared metal vanadium, metal chromium and metal copper into the intermediate frequency induction furnace, and heat it to melt it. In this smelting step, a small amount of prepared metal vanadium, metal chromium and metal copper ingredients are added into the intermediate frequency induction furnace for melting first, and then the remaining ingredients are added into the molten alloy melt as supplementary materials. When feeding the feeding material, the temperature in the medium frequency induction furnace is controlled at 1500°C to 1550°C;

[0048] After the smelting is completed, af...

Embodiment 1

[0059] The ingredients are prepared according to the following proportions, in terms of weight percentage, including: copper 38%, vanadium 30%, chromium 32%.

[0060] Put the prepared metal vanadium, metal chromium, and metal copper into the intermediate frequency induction furnace, and heat it to melt it. The temperature in the intermediate frequency induction furnace is controlled at about 1520°C. After the ingredients are adjusted to pass before the furnace, it is released from the furnace, and the temperature of the furnace is 1460°C.

[0061] The alloy melt is atomized to prepare alloy powder, the atomization medium is argon, and the atomization pressure is 4MPa. A far-infrared dryer is used to dry the atomized alloy powder, and the drying temperature is 210°C. Then, the powder with a particle size ranging from 100 to 350 meshes is screened out by a powder sieving machine as the finished powder. The finished powder is directly used as a powdery CrCuV solid solution, and...

Embodiment 2

[0078] The ingredients are prepared according to the following ratios, including: copper 43%, vanadium 35%, chromium 22%.

[0079] Add the prepared metal cobalt, metal chromium, metal nickel, and metal copper into the intermediate frequency induction furnace, and heat it to melt it. The temperature in the intermediate frequency induction furnace is controlled at about 1520°C. After the ingredients are adjusted to pass before the furnace, it is released from the furnace, and the temperature of the furnace is 1460°C.

[0080] The alloy melt is atomized to prepare alloy powder, the atomization medium is argon, and the atomization pressure is 4MPa. A far-infrared dryer is used to dry the atomized alloy powder, and the drying temperature is 210°C. Then, the powder with a particle size ranging from 100 to 350 meshes is screened out by a powder sieving machine as the finished powder. The finished powder is directly used as a powdery CrCuV solid solution, and used as a material for ...

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Abstract

The invention discloses a CrCuV solid solution for heterogeneous interface bonding and its preparation method and application. The composition of the CrCuV solid solution is: 33-42% copper; 25-35% vanadium; the balance is chromium. Using the CrCuV solid solution as a raw material, laser additive manufacturing or fusion welding is used to synthesize a gradient material with the CrCuV solid solution as a transition layer, which effectively alleviates the differences in thermal expansion coefficient, melting point, and elastic modulus of the heterogeneous interface. Reduce the residual stress level at the heterogeneous interface during the additive manufacturing process, avoid the precipitation of hard and brittle phases, meet the manufacturing requirements of heterogeneous parts, and create a high-strength bonding interface. The CrCuV solid solution used for the connection of heterogeneous materials can have high connection interface strength and hardness, and can be widely used in the combination of heterogeneous parts such as steel-aluminum, steel-tungsten, or steel-copper.

Description

technical field [0001] The invention relates to a CrCuV solid solution for bonding heterogeneous interfaces, and a preparation method and application of the CrCuV solid solution. Background technique [0002] With the development of science and technology and the rapid advancement of industry, people have higher and higher requirements for materials. The performance of a single material can no longer meet the requirements of technological development. The composite application of multiple materials has become the trend of the times. The composite of different materials The application can not only achieve higher performance, but also save material cost. [0003] However, dissimilar materials have many problems in joining due to their different physical properties. Taking the connection of steel-aluminum dissimilar metals as an example, due to the large difference in atomic radius between aluminum and iron, the difference in atomic valence and electronegativity, and the smal...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22C30/02B22F9/08C23C24/10B23K35/30B33Y70/00
CPCB22F9/082B22F2009/0824B22F2009/0848B23K35/302B33Y70/00C22C9/00C22C30/02C23C24/106
Inventor 夏志新谢勇张弛杨志刚
Owner SUZHOU UNIV
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