Effect of electrical pulse treatment on the microstructural and mechanical responses of heterogeneous linear friction welded TC17/TC4 dissimilar joint

The heterogeneous microstructure of TC17/TC4 joint manufactured by linear friction welding will reduce the mechanical properties compared with the base metals, of which the strength and ductility are hard to be improved simultaneously by traditional aging heat treatment (AHT), seriously limiting the application of LFW in the manufacturing of TC17/TC4 blisks. To this end, the present work proposes to use electric pulse treatment (EPT) to enhance the strength and ductility of the joint simultaneously by improving its microstructure. The results show that EPT effectively improves the plasticity of the joint compared with AHT. The tensile properties of aging treated joint are similar to that of the as welded…

• NN
  National Natural Science Foundation of China
• NP
  Northwestern Polytechnical University
• FR
  Fundamental Research Funds for the Central Universities

  Award: Kfkt2023-12
• FR
  Fundamental Research Funds for Central Universities of the Central South University

  Award: D5000230215
• NS
  National Science Fund for Distinguished Young Scholars

  Awards: 52475408, 52225505