To study the penetration performance and behind-target damage-abilities of tungsten fiber/Zr-based bulk metallic glass matrix composite ( WF/Zr-MG ) penetrator penetrating the finite-thickness targets,the ballistic experiment on 45 steel target impacted by WF/Zr-MG rod with length-to-diameter ratio of 15.4 and volume fraction of 80％( a tungsten fibre diameter of 0.3 mm) under the impact velocity of (1600±20)m/s was carried out and compared with 91W rod. The macroscopic damage effects on the 45 steel target and the subsequent-effect target were analyzed,and the damage and fragment scattering characteristic parameters of behind-target were obtained for two kinds of materials rods,and the differences in the damage mechanisms of two types of rod hehind-target were discussed. The research results show that compared to the 91W rod,the WF/Zr-MG rod has a structural"self-sharpening"characteristic during the penetration process,and forms smaller crater-diameters in the target plate,dissipates less energy during penetration,and exhibits higher penetration performance. Additionally,due to the asymmetric tensile and compressive properties of WF-MG rod,the tod immediately breaks and disperses while exiting from the target,so the damage area caused by WF/Zr-MG rod on 2A12 subsequent-effect target located 0.5 m from the target plate is 1.7 times and 1.63 times the damage area of the 91W rod,respectively. The number of effective fragments is 2.76 times and 1.61 times that of the latter,respectively. The fragment scattering angle and the maximum break size of the subsequent-effect target are both greater than those caused by the 91W rod,increasing the damage capability on behind-target objectives.
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