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A kind of zirconium-based superalloy solder and its preparation method

A high-temperature alloy and brazing material technology, which is applied in metal processing equipment, manufacturing tools, welding equipment, etc., can solve the problems of unusable and short life, and achieve the effect of uniform melting, excellent high temperature performance and good wetting

Active Publication Date: 2017-03-08
无锡腾达海川新材料有限公司
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Problems solved by technology

In the aerospace, national defense and military fields, alloy materials with high strength and heat resistance are required for brazing connection. Although some domestic high-temperature alloys are used as connection materials in the domestic manufacturing industry, the shortcomings are obvious. Products with high processing requirements have a long service life. so short that it can't even be used

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  • A kind of zirconium-based superalloy solder and its preparation method

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Embodiment Construction

[0026] A zirconium-based superalloy solder, the solder components include V, Ta, Si, Sn, Cu, Cr, Fe and Zr, the addition of the element Ta promotes the precipitation of the γ′ phase and delays the aggregation and growth of the γ′ phase Process, grain refinement, thus improving the high temperature strength of zirconium-based superalloy solder. Adding elements Si and Sn reduces the solubility of the solder matrix, improves the fluidity of the alloy, does not form a second phase solid solution, and improves the plasticity and forming ability of the alloy solder. Adding elements V and Ta, because the atomic radii of these two elements are quite different from Zr, enhances the solid solution strengthening effect of γ and γ′, and not only improves the interatomic bonding force, recrystallization temperature and Diffusion activation energy, and more effectively improve the thermal strength of the alloy solder. Add elements Cu, Cr and Fe to form γ solid solution and γ′ phase, and th...

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Abstract

The invention discloses a high-temperature zirconium base alloy brazing filler and a preparation method thereof. The brazing filler comprises the following components in percentage by mass: 5.0%-8.0% of V, 2.0%-5.0% of Ta, 4.0%-6.0% of Si, 0.8%-1.6% of Sn, 18%-25% of Cu, 12%-15% of Cr, 0.6%-1.0% of Fe, and the balance of Zr. The high-temperature zirconium base alloy brazing filler is strong in wetting and diffusing capabilities, the wetting angle of the brazing filler on stainless steel, W-Cu composite materials and Si3N4 ceramic is 12-19 degrees, and compared with a conventional high-temperature brazing filler, the high-temperature zirconium base alloy brazing filler, disclosed by the invention, has the advantages that at high temperature, the high-temperature zirconium base alloy brazing filler has excellent high-temperature performance, can wet high-temperature base materials better, and can be used for brazing the W-Cu composite materials with the stainless steel as well as brazing the stainless steel with the Si3N4 ceramic.

Description

technical field [0001] The invention relates to a brazing filler metal for connecting dissimilar materials, specifically a zirconium-based high-temperature alloy brazing filler metal and a preparation method thereof, and belongs to the field of welding technology. Background technique [0002] The welding structure made of dissimilar high-temperature materials can not only meet the different requirements of different working conditions for materials, but also save a lot of precious metal materials, greatly reduce costs, and play the role of superior performance of different materials. Welded structures of dissimilar materials are widely used in the fields of machinery, electric power, nuclear industry, aerospace and national defense, and the welding of dissimilar materials has attracted more and more attention at home and abroad. However, the connection problem of high-temperature materials has also led to a slow pace of development. Therefore, it is urgent to develop a new...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): B23K35/24B23K35/40
Inventor 许祥平王锡岭杨骏杨家旺夏春智邹家生
Owner 无锡腾达海川新材料有限公司
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