Comparison of Released Energy and Coupling Damageability of Typical Reactive Alloy under High-speed Impact on Target

Reactive metal is a new type of high-density and ultra-insensitive energetic material, which can release a large amount of chemical energy under the high-speed impact, and has the potential of chemical energy to enhance kinetic energy damage. The reactive metal samples of amorphous alloys, traditional alloys, and high-entropy alloys are driven by a ballistic gun to hit the quasi-closed container and spaced targets at 1 500 m/s. The differences in the impact energy release behaviors and the coupling damageabilities of three samples to the spaced targets were compared and analyzed. The results show that the burning debris cloud formed after the reactive metal sample penetrates the target plate at high speed has both kinetic and chemical energy damageabilities to the spaced target. The chemical energy release efficiency is positively related to the static compressive strength of the sample. Since the chemical energy and kinetic energy carried by the sample move with the burning debris cloud and are released in different spaces behind the target, the damageability to the spaced target has nothing to do with the total energy carried. The contribution of chemical energy to the coupling damageability mainly depends on the energy release efficiency. © 2021, Editorial Board of Acta Armamentarii. All right reserved.