An investigation on the jet formation and penetration characteristics of the CuCoCrFeNi high-entropy alloy liner

• Published in: AIP advances Vol. 14; no. 5; pp. 055017 - 055017-11
• Main Authors: Li, Rong-Xin, Wang, Rui-Qi, Tian, Quan-Wei, Zhong, Xi-Ting, Song, Jia-Xing, Huang, Jun-Yi, Wu, Jia-Xiang, Li, Yu-Chun
• Format: Journal Article
• Language: English
• Published: Melville American Institute of Physics 01.05.2024; AIP Publishing LLC
• Subjects: Constitutive models; High entropy alloys; Mechanical tests; Parameters; Penetration depth; Penetration tests; Shaped charges
• ISSN: 2158-3226; 2158-3226
• DOI: 10.1063/5.0207709

This study performs a series of mechanical tests, quasi-static and dynamic, on CuCoCrFeNi high-entropy alloys (HEAs) using an experimental setup to explore the performance of Cu-based HEAs in shaped charges. It derives the parameters for the Johnson–Cook constitutive model through fitting. A static penetration test is conducted with a small cone angle and a thin-walled liner. The outcomes are then compared to simulation data generated by AUTODYN software. They indicated that the CuCoCrFeNi HEA liner can produce a shaped-charge jet that achieves both penetration and reaming effects when driven by explosives. In a C45 steel target, the diameter of the penetration hole is 46.43% of the charge diameter. The experimental findings align closely with the simulations, indicating discrepancies of less than 12.13% in the diameters of the penetration holes and ∼2.56% in penetration depths. Hence, the numerical simulation approach and its parameters can be utilized to investigate the penetration characteristics of Cu-based HEA jets, providing a groundwork for future optimization of HEA-shaped charge designs.