The application of refractory high entropy alloys in shaped charge

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Abstract
High entropy alloys (HEAs) have attracted widespread attention from researchers as emerging materials. Among them, refractory high entropy alloys (RHEAs) have shown potential for application in high-temperature environments due to their excellent high-temperature mechanical properties. This study mainly focuses on TiAlVZrNb RHEAs, conducting quasi-static and dynamic mechanical experiments, and fitting Johnson Cook constitutive equation parameters. In addition, the formation and aftereffect of the jets are studied through experiments. The temperature and yield strength distribution of the jets are studied through numerical simulation. The results indicate that under quasi-static loading, TiAlVZrNb RHEAs exhibit high yield strength and excellent ductility. The cohesiveness of the jet is discussed by combining the theoretical and mechanical properties. The burn marks on the quilt and oil tank behind the target also confirm the strong aftereffect of TiAlVZrNb RHEAs jet. This study can provide a reference for the application and design of RHEAs liner.
Funding Information
  • Defense Engineering Institute (YSX2024KFXY005)

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