No abstract

No abstract

No abstract

No abstract

No abstract

No abstract

In this work, a novel Ni-Co-Al multi-principal wire was used as only one type of filler material to finish the joining of TA1/Q345 bimetallic sheets by in situ preparation of high-entropy materials in the weld zone (WZ). The results indicated that a good weld formation could be achieved by using the Ni-Co-Al wire. The thermodynamic environment with high mixing entropy ( S mix ) and low mixing Gibbs free energy ( G mix ) in the WZ could be created by the Ni-Co-Al wire and the elements introduced from base metals. It could efficiently inhibit the formation of Fe-Ti IMCs and promote the solid-solution structures of FCC and BCC in the WZ. Fe-Ti IMCs were only presented in the transition zones on the TA1 flyer layer as well as a narrow region of the WZ within ∼ 30 μm away from the Q345/WZ interface, where the G mix was higher than the G of Fe-Ti IMCs.

No abstract