Structure and phase composition of Ni-Cr-Zr and Ni-Cr-Hf alloys used as brazing alloys

摘要

High temperature resistance of brazed joints is largely determined by the influence of depressants. Use of zirconium and hafnium as depressants provides the highest mechanical and anticorrosion properties of brazed joints. Constitutional diagrams and phase composition of three-component systems in an area rich in nickel, are considered. Iso- and polythermal sections of diagrams have been constructed allowing development of braze alloys for high-temperature resistant alloys.