Vacuum Diffusion Bonding of TiAl Alloys and Nickel-Based Superalloys

Wed May 11 16:03:30 CST 2022

Vacuum Diffusion Bonding of TiAl Alloys and Nickel-Based Superalloys

TiAl alloy is used in hot end parts of aviation and aerospace vehicles

The ideal candidate material [1], compared with the traditional application of nickel-based high temperature composite

Partial substitution of gold, TiAl alloys can significantly reduce the weight of the aircraft,

Improve its launch and flight efficiency. Therefore, the study of TiAl alloy and nickel base

The connection of superalloys is important for strengthening TiAl alloys in aerospace, etc.

The wide application in the field is of great significance. Currently, it is used for TiAl

Gold connection methods mainly include argon arc welding, electron beam welding, friction welding, brazing

welding and diffusion welding, etc. [2-6], in which diffusion bonding can realize dissimilar materials.

High-precision, high-quality joints, and control of brittle metals in the weld

The formation of intermediate compounds. Therefore, vacuum diffusion is used in most cases.

The connection method is used to realize the connection between TiAl alloy and dissimilar materials [7].