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

doi:10.3969/j.issn.1000-1093.2021.03.016

Abstract

Abstract: 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.

Key words: Al-Mg-Allayeredarmorplate, explosivewelding, lightmetal, ballisticresistance, numericalsimulation

CLC Number:

TJ012.4

GUO Denggang, ZHOU Qiang, LIU Rui, CHEN Pengwan. Ballistic Resistance of Al-Mg-Al Light Metal Layered Armor Plate[J]. Acta Armamentarii, 2021, 42(3): 598-606.

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第42卷第3期2021 年3月
兵工学报ACTA ARMAMENTARII
Vol.42No.3Mar.2021

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