Effect of interlayer material on microstructure and mechanical properties of diffusion brazd IC10 superalloy

Abstract

Abstract The diffusion brazd test of IC10 superalloy was carried out by using Russia solder M3 interlayer powder. The wetting quality of the high-temperature alloy was evaluated by the contact angle of wetting at various temperatures. The mechanical properties of the joints were determined at operating temperatures. The result shows that at the temperature of 1250°C, the contact angles of interlayer powder M3 alloy do not exceed 4∼5°, it has high wettability and spread ability over the surface of the IC10 alloy. The average test time before failure at the temperature of 900° and the stress of 320 MPa was 38 hours, and at the stress of 350 MPa was 9.6 hours, all both higher than 80% of the base material under the same experimental conditions. The structure of the joints has a smooth transition from the base metal to the soldered joint. In the structure of the joint, the γ’- phase with a large volume concentration in the base metal. IC10 superalloy has excellent high temperature properties when the M3 interlayer was used.