Supervisor:
Southwest Ordnance Industry Bureau
Organizer:
Chongqing Ordnance Industry Society
Chongqing University of Technology
Chongqing University of Technology
Feasibility study on TiZrNbVAlhigh entropy alloy projectile penetrating double layer steel plates
| DOI: | 10.11809/bqzbgcxb2023.11.003 |
| Keywords: | high entropy alloy; projectile; penetration; Johnson Cook model |
| Abstract: | In order to verify the feasibility of the TiZrNbVAl high entropy alloy projectile, the mechanical properties of the material and target penetration test are carried out. The mechanical performance under static and dynamic states of TiZrNbVAlhigh entropy alloy are studied at 10 -3 s -1 , 1 000 s -1 , 3 000 s -1 and room temperature 200 ℃, 300 ℃ with static material test, impact experiment system and SHPB tension bar.Its anti impact fracture toughness, strain rate effect and temperature effect are analyzed. The results show that the TiZrNbVAlhigh entropy alloy has good strength and excellent resistances of shock and fracture; the temperature softens effect at high temperatures and the strain rate strengthens effect at dynamic loading appeared. The Johnson Cook model parameters of the HEA are fit through the experimented data. The TiZrNbVAl projectile penetrates two layers of Q345 steel plates at a speed of 786 m/sin and a 125 mm artillery target penetration verification test. The head erosion is relatively serious, but the main structure is complete. It verifies that the TiZrNbVAlHEA is used to penetrate the warhead shell body’s feasibility.The simulation results of the erosion of the projectile head are in good agreement with the test results, which verifies the reliability of the material model and the numerical simulation model. The research conclusions and results can provide ideas and basis for the design of high entropy alloy penetrating projectiles. |
| Issue: | Vol. 44 No. 11 (2023) |
| Published: | 2023-11-28 |
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