Prediction of Phase Formation Sequence in Multicomponent NiCoW/Nb3Al Interface
摘要
The interdiffusion behavior between NiCoW alloy and Nb3Al at 1000 °C was investigated. Based on the effective heat of formation model, the compounds at the interface are analyzed by calculating the effective heat of formation and establishing the map of favorable compound formation. It is concluded that the formation sequence of phases between the nickel-based alloy and Nb3Al is Ni6Nb7 → Co2Nb/Ni6Nb7 + Nbss → Ni3Nb → W-rich phase. The results of this paper provide a reference for the phase formation sequence law of multicomponent interface between Nb3Al and the matrix alloy.