摘要
Effect of Fe on the martensitic transformation of NbRu high-temperature shape memory alloys is investigated by the experiments and first-principles calculations. The results show that Fe is predicted to occupy Ru sites. The addition of Fe increases the stability of Nb50Ru50-xFex β phase, leading to the significant decrease of the β to β′ martensitic transformation temperature. In addition, the mechanism of the Fe alloying effect is explained on the basis of the electronic structure.
Effect of Fe on the martensitic transformation of NbRu high-temperature shape memory alloys is investigated by the experiments and first-principles calculations. The results show that Fe is predicted to occupy Ru sites. The addition of Fe increases the stability of Nb50Ru50-xFex β phase, leading to the significant decrease of the β to β′ martensitic transformation temperature. In addition, the mechanism of the Fe alloying effect is explained on the basis of the electronic structure.
基金
Supported by the National Natural Science Foundation of China under Grant No 50531020, and the Scientific Research Fund of Heilongjiang Provincial Education Department under Grant No 11511088.
