Method for connecting copper-silver alloy by high-temperature alloy ring-shaped member

Abstract

The invention provides a method for connecting a copper-silver alloy by a high-temperature alloy ring-shaped member. The method comprises steps such as preparing the high-temperature alloy and the copper-silver alloy, preparing a wrapping sleeve, assembling, preforming hot isostatic pressure pretreatment, controlling hot isostatic pressing process and post processing. A hot isostatic pressure diffusion and bonding process is adopted by the method, and an interlayer brazing filler metal is used, so that the diffusion bonding is formed by the copper-silver alloy and the high-temperature alloy ring-shaped member under high temperature and high pressure so as to form a connecting member of the high-temperature alloy and the copper-silver alloy. According to the method, a reliable connection ofthe high-temperature alloy and the copper-silver alloy is achieved, a functional integrated structure member is formed, the connection strength is enhanced, and the problems such as peeling and delamination of a connection layer are avoided.

Description

technical field [0001] The invention belongs to the field of manufacturing high-temperature alloy functional structural parts, in particular to the connection between high-temperature alloy ring parts and copper-silver alloys. Background technique [0002] Superalloys have been widely used in aerospace and energy fields. However, with the development of materials and processes, superalloys need to be combined with other materials to achieve functional integration under the condition of satisfying structure and strength. When connecting superalloys and copper-silver alloy materials, traditional welding, brazing, and direct welding methods have problems such as peeling off, falling blocks, delamination, separation from the substrate, and high porosity of the connecting layer. [0003] Hot isostatic pressing technology is a process that applies high temperature and high pressure to the connecting material at the same time, so that the atoms of the connecting material move rapi...

AI Technical Summary

Problems solved by technology

When connecting superalloys and copper-silver alloy materials, traditional welding, brazing, and direct welding methods have problems such as peeling off, falling blocks, delamination, separation from the substrate, and high porosity of the connecting layer.

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