Study on explosive welding of A7075/A1060/Ti-6Al-4V three-layer metal plate
In order to solve the problem that it's difficult to combine aluminum alloy A7075 with titanium alloy Ti-6Al-4V in traditional explosive welding due to their high strength and low melting point characteristics,pure aluminum A1060 is adopted as a transition layer to realize the explosive welding of A7075 and Ti-6Al-4V.To begin,aluminum alloy A7075 was utilized as the flyer plate and titanium alloy Ti-6Al-4V as the base plate for direct welding to demonstrate the impossibility of direct welding between the two,and then pure aluminum A1060 was used to effectively accomplish the explosive welding of A7075/A1060/Ti-6Al-4V.The morphology of the upper and lower interfaces of the interlayer welding is analyzed.At the same time,the mechanical properties of the composite plate are tested in tensile and bending to verify the quality of the welding.Finally,a combination of numerical simulation and experimental analysis is used to establish a finite element model consistent with the experimental conditions in ANSYS/AUTODYN software to analyze the dynamic process of the welding and the interface.The results show that the shear strength of the A7075/A1060 interface in A7075/A1060/Ti-6Al-4V is 69.77～81.57 MPa,and the interface morphology derived from the numerical simulation results is consistent with the actual welding results.
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