铝-镁-铝轻质金属层状复合靶抗弹性能

为了对比铝-镁-铝三明治结构复合靶与等厚度铝合金靶的抗弹性能，研究铝-镁层状复合靶用于装甲防护的可行性，提出使用镁合金替代部分铝来降低铝合金装甲质量的方法。采用爆炸焊接法制备铝-镁-铝层状复合板，并通过实验测试和数值模拟分析其抗弹性能及机理。基于残余穿深法，对铝-镁-铝层状复合靶与AZ31镁合金靶、2024铝合金靶和铝-镁-铝层叠接触靶进行对比实验，并对枪弹侵彻不同类型靶板的过程进行数值模拟以验证实验结果，进一步研究了界面结合强度对层状复合靶板抗弹性能的影响。结果表明：在等厚度条件下，铝-镁-铝层状复合靶具有与2024铝合金靶相当的防护效果，但比2024铝合金靶减轻23%以上；界面结合强度可以提高层状复合靶的抗弹性能，具体表现为随着界面结合强度的增加，靶板通过整体变形来使抵抗弹头侵彻能力增强。

Ballistic Resistance of Al-Mg-Al Light Metal Layered Armor Plate

The feasibility of Al-Mg composite plate used for armor protection is studied to compare the shell-proof performances of Al-Mg composite plate and aluminum alloy plate with uniform thickness. The magnesium alloy is used to replace partial Al alloy to lower the weight of Al alloy armor, and the explosive welding method is applied to fabricate the Al-Mg-Al layered composite plate. The ballistic resistance and corresponding mechanism of Al-Mg-Al layered composite plate were analyzed through the experimental measurement and numerical simulation, respectively. The layered armor plate was compared with AZ31 magnesium alloy plate, 2024 aluminum alloy plate and stacked Al-Mg-Al plates by using the residual depth-of-penetration method. The penetration of the bullet on different types of targets was simulated to verify the experimental results, and the effect of interfacial bonding strength on the ballistic resistance of layered composite plate was further studied. The results show that the ballistic performance of Al-Mg-Al welded plate is close to that of 2024 aluminum alloy plate, but it is 23% lighter than the 2024 aluminum alloy plate under the condition of equal plate thickness. The interfacial bonding strength can improve the ballistic resistance of layered composite plate. With the increase in interfacial bonding strength, the anti-ballistic capability of target plate is enhanced through the coordination deformation of all the layers.