Method for connecting Fe-based high-temperature alloy ring with internal characteristics and Cu-Ag alloy

Abstract

The invention provides a method for connecting a Fe-based high-temperature alloy ring with internal characteristics and a Cu-Ag alloy. The method comprises the following steps: preparing a high-temperature alloy and Cu-Ag alloy ring, preparing a capsule, carrying out assembly, carrying out vacuum treatment and sealing, controlling a hot isostatic diffusion bonding process, carrying out aftertreatment and the like. According to the method for connecting the Fe-based high-temperature alloy ring with internal characteristics and the Cu-Ag alloy, provided by the invention, by adopting a hot isostatic diffusion bonding technology, diffusion bonding is carried out on the Cu-Ag alloy and the high-temperature alloy ring with the internal characteristics in a high-temperature and high-pressure environment, and a target ring is formed. The method not only can well realize the bonding of characteristic high-temperature alloy and Cu-Ag alloy, but also can meet the bonding of characterless high-temperature alloy and Cu-Ag alloy and avoid bonded layer peeling, chipping, layering and separation from a base body. The porosity of a bonded layer is low.

Description

Technical field [0001] The invention belongs to the field of iron-based high-temperature alloy manufacturing, and particularly relates to the diffusion connection of iron-based high-temperature alloy and copper-silver alloy. Background technique [0002] In recent years, iron-based superalloys with low expansion coefficients have been widely used in aviation, aerospace, energy, and metallurgy. When iron-based superalloys are connected to copper-silver alloy materials, due to the difference in expansion coefficients between the materials, traditional welding will have problems such as peeling, delamination and high porosity of the connecting layer. For iron with internal characteristics It is especially obvious when the ring parts of high-temperature alloy are connected and formed. [0003] The hot isostatic pressure diffusion bonding technology is a process in which the atoms of the connected material move quickly and mutually diffuse under the action of high temperature and high ...

AI Technical Summary

Problems solved by technology

When connecting iron-based superalloys and copper-silver alloy materials, due to the difference in expansion coefficient between the materials, traditional welding will have problems such as peeling off of the connection layer, delamination and high porosity of the connection layer. For iron with internal characteristics It is especially obvious when the base superalloy ring parts are connected and formed

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