Abstract
This study systematically investigated the dynamic mechanical properties and penetration-damage behavior of high-density VNbTa medium-entropy alloys under dynamic loading. The split Hopkinson bar, impact energy release, and spaced-target plate tests were carried out. Results from the impact energy release test indicated that a significant chemical reaction and substantial energy release occurred when the alloy hit a rigid target plate at high speed. The spaced-target plate penetration test verified the combined destructive effect of the alloy’s kinetic and chemical energies during penetration, leading to large perforations and severe deformation of the rear target plate. Moreover, a shock-induced energy release model and a fragment cloud diffusion model were established, uncovering the energy release mechanism and fragment-cloud expansion law. These findings provide a theoretical and experimental basis for the design and application of high-density, high-energy structural materials.
Published Version
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