**5. Conclusions**

This study shows that in Al-Fe alloys the morphology of the intermetallic phase in the cast-state has a notable effect on the structural evolution during 20 revolutions of HPT. This feature can be even more important, than the concentration of Fe in the alloy. The initial size and dispersity of the particles, formed during crystallization, their volume fraction, and, respectively, the length of the interphase boundaries plays an important role in forming mechanical and electrical properties by HPT. The following specific conclusions are drawn from the results presented in this study:


**Author Contributions:** Conceptualization, M.M. and A.M.; methodology, X.S.; software, N.E.; writing—original draft preparation, A.M.; writing—review and editing, N.E., M.M. and X.S.; visualization, E.M. All authors have read and agreed to the published version of the manuscript.

**Funding:** This research was funded by Russian Science Foundation, Grant number 20-79-10133.

**Institutional Review Board Statement:** Not applicable.

**Informed Consent Statement:** Not applicable.

**Data Availability Statement:** Not applicable.

**Acknowledgments:** Authors are grateful to the personnel of the research and technology Joint Research Center, Nanotech, Ufa State Aviation Technical University, for their assistance with instrumental analysis.

**Conflicts of Interest:** The authors declare no conflict of interest.
