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Abstract The TiNiNb pre-alloyed powder prepared after mechanical alloying was used as experimental material, and TiNiNb alloy was prepared by vacuum hot pressing sintering method (temperature 900℃, pressure 35 MPa,… Click to show full abstract
Abstract The TiNiNb pre-alloyed powder prepared after mechanical alloying was used as experimental material, and TiNiNb alloy was prepared by vacuum hot pressing sintering method (temperature 900℃, pressure 35 MPa, vacuum degree 1.6×10-3 Pa). The relative density and microstructure evoultion were analyzed by a serial of testing methods, such as: XRD and SEM etc. The results showed that the TiNiNb pre-alloyed powder presented amorphous state, the relative density of TiNiNb alloy after vacuum hot pressing sintering was 98.8%, and the alloy was completely crystallized. The microstructure of vacuum hot-pressed TiNiNb alloy is uniform, mainly composed of Ti-Ni matrix phase, β-Nb phase, (Ti,Nb)2Ni hard phase and a small amount of TiC impurity phase.
Journal Title: Materials Letters
Year Published: 2021
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