The microstructure indicated that the flat interface was changed into the wavy one, and the thick transition layer with microdefects could be removed using an inclined-wall FS. With increasing size of angle, the initial impact angle evidently increased. With increasing span, the location where the maximum impact velocity occurred approached the free end of the joint. The effects of the span and size of the inclined wall on the impact parameters were evaluated by numerical simulations.
In this study, an oblique angle in the working zone was prefabricated to make an inclined-wall field shaper (FS) for MPW and thereby improve the quality of the joint. Due to the mismatched impact parameters between the velocity and the angle, a joint with an unbonded zone in the middle and the microdefects at the interface was fabricated by magnetic pulse welding (MPW).
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