钨锆铪合金活性破片对间隔靶耦合毁伤特性

The chemical energy of tungsten-zirconium-hafnium (W-Zr-Hf) active alloy fragments with high strength and high density under impact loading is studied to enhance the kinetic energy damage capability. A ballistic gun-driven fragment penetration experiment was carried out on a single-layer Q235 steel plate and a spaced target (three-layer LY12 thin aluminum plate) behind the steel plate. The energy release behavior and damage process of the fragment after penetrating the steel plate were photographed by using a high-speed photography system. The shape and motion characteristic parameters of fragment cloud behind the steel plate were measured, and the damage area and volume of fragment cloud to the spaced targets at different positions behind the steel plate were obtained. The results show that the chemical energy consumption of tungsten zirconium hafnium alloy active fragments is extremely low in front of the plate during high-speed penetration into steel plates, and a coupling energy region with kinetic energy and chemical energy is formed behind the plate, which has an ellipsoidal shape. The damage mode of the spaced target in the energy region is mainly the enhanced kinetic energy damage of chemical energy in the near-field region of activation point, while kinetic energy damage is mainly in the far-field region. The damage volume of a single fragment with a diameter of 9.5 mm can reach 292.7 cm³ and 331.5 cm³ for the spaced targets at 125 mm and 360 mm away from the steel plate, respectively.