添加剂制备高强马氏体时效钢抗弹道冲击性能的实验研究

IF 2.1 Q2 ENGINEERING, CIVIL International Journal of Protective Structures Pub Date : 2021-08-16 DOI:10.1177/20414196211035486
M. Costas, Maisie Edwards-Mowforth, M. Kristoffersen, F. Teixeira-Dias, V. Brotan, Christian O. Paulsen, T. Børvik
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引用次数: 11

摘要

马氏体时效钢是一种热处理后具有超高强度的低碳钢。与增材制造(AM)相结合,马氏体时效钢的特性表明了实现复杂几何形状和提高弹道防护性能重量比的潜力。研究了粉末床熔合制备的AM马氏体时效钢整体板和异型板的弹道性能。通过相对于铸态方向三个不同方向的准静态和动态试验,揭示了马氏体时效钢在铸态和热处理后的力学性能。还进行了冶金研究,以研究材料在测试前后的微观结构。通过对不同靶形的7.62 mm APM2子弹射击,揭示了马氏体时效钢样品在弹道范围内的抗弹道穿孔性能。得到了弹道极限曲线和速度,表明最厚的热处理AM马氏体时效钢板具有特别好的弹道防护潜力。穿甲弹的硬核在所有测试中都破裂了,在针对热处理目标的测试中偶尔也会破裂。然而,由于材料的严重脆性,目标在某些情况下显示出明显的碎片,最明显的是型材面板。
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Ballistic impact resistance of additive manufactured high-strength maraging steel: An experimental study
Maraging steel is a low carbon steel known for its ultra high-strength after heat treatment. In combination with Additive Manufacturing (AM), the properties of maraging steel indicate potential to enable complex geometries and improved performance-to-weight ratios for ballistic protection. This study investigates the ballistic performance of AM maraging steel monolithic plates and profile panels fabricated by powder bed fusion. The mechanical properties of the maraging steel, both in the as-built state and after heat treatment, were revealed through quasi-static and dynamic tests in three different directions with respect to the build direction. Metallurgical studies were also conducted to investigate the microstructure of the material both before and after testing. The ballistic perforation resistance of the maraging steel samples was disclosed in a ballistic range by firing 7.62 mm APM2 bullets towards the different target configurations. Ballistic limit curves and velocities were obtained, demonstrating that the thickest heat-treated AM maraging steel plate has a particularly good potential for ballistic protection. The hard core of the armour piercing bullet broke in all tests and occasionally shattered during tests with heat-treated targets. However, due to the severe brittleness of the material, the targets showed significant fragmentation in some cases and most significantly for the profile panels.
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来源期刊
CiteScore
4.30
自引率
25.00%
发文量
48
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