Creep behavior and deformation feature of TiAl–Nb alloy with various states at high temperature

By means of creep properties measurement and microstructure observation, an investigation has been made into the creep behaviors and deformation features of TiAl–Nb alloy with various states at high temperature. Results show that the microstructure of as-cast alloys consists mainly of lamellar γ/α2 phases with various orientations, the boundaries located in between the ones consist of single γ phase. The bigger plastic deformation of alloy...