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A Special Vortex Formation at the Ta/Fe Interface During Explosive Welding

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Document pages: 10 pages

Abstract: The vortex at the Ta Fe explosively welded interface is featured by intermediate zone being fully bounded by Ta matrix, which differs from the vortex structures observed in the most bimetallic interfaces. In this work, advanced characterizations and numerical simulations were integrated to establish a detailed evolution model of the special vortex, and the associated governing mechanisms were identified. It was also inferred that the mesoscale cavity and micro cracks within the vortex resulted from geometric hole and extrusion movement that generated during the vortex evolution, respectively. Furthermore, a diversity of metallurgical structure was revealed at the Ta Fe interface, which did support the deformation path of the interface material observed in the simulations. The insights gathered here benefit to an in-depth comprehension of impact welding.

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