**Thanks**

*Engineering Steels and High Entropy-Alloys*

**152**

**6. Conclusions**

**Figure 19.**

**Figure 18.**

purity, using the VIM-VAR duplex process.

High-entropy alloys are well suited for production in vacuum arc remelting furnaces due to low material losses and to obtaining high purity by working in vacuum and argon. Moreover, they can also be produced in induction furnaces, for superior

*HEA-polymer ballistic package during dynamic tests. (a) after the first firing and (b) after the second firing.*

*HEA-ceramic ballistic package during dynamic tests (a) after the first firing (b) and after the second firing (c).*

The hardness decrease of the AlCrFeCoNi class high-entropy alloys is proportional to the aluminum content decrease, from 500 HV1 for HEA 1 (AlCrFeCoNi) at 400 HV1 for HEA 5 (Al0.8CrFeCoNi) and 224 HV1 for HEA 6 (Al0.6CrFeCoNi).

The authors want to thank the team of researchers coordinated by Professor PhD Tudor Cherecheş for collaborating in the dynamic tests and the processing of experimental data.

*Engineering Steels and High Entropy-Alloys*
