Article

Analysis of structure formation processes features in high-entropy alloys of Al-Co-Cr-Fe-Ni system during laser alloying

V. V. GіrzhonZaporizhzhya National University, 66 Zhukovsky Str., Zaporizhzhya, 69600, UkraineV. V. YemelianchenkoZaporizhzhya National University, 66 Zhukovsky Str., Zaporizhzhya, 69600, UkraineO. V. SmolyakovZaporizhzhya National University, 66 Zhukovsky Str., Zaporizhzhya, 69600, UkraineA.S. RazzokovUrgench State University, 14 Khamid Alimzhan Str., Urgench City, 220100, Uzbekistan

Results in Materialsjournal2022en

ABI

Abstract

Using the time dependent nucleation theory, the temperature dependences of the heterogeneous nucleation time for multicomponent substitution solid solutions, the formation of which is typical for high-entropy alloys in Al–Co–Cr–Fe–Ni systems obtained by laser alloying, were calculated. It is established that taking into account the melt cooling rate leads to an increase in the minimum nucleation time. The cooling rates at which the BCC (B2) and FCC phases critical radius nucleus not formed are estimated. The intervals of melt cooling rates in which the formation of single-phase BCC (B2) - or two-phase (BCC (B2) + FCC) - alloys is estimated. The influence of chemical composition on the change of these cooling rates is analyzed.

Topics

High Entropy Alloys Studies High-Temperature Coating Behaviors Additive Manufacturing Materials and Processes

Identifiers

DOI: 10.1016/j.rinma.2022.100311

Citations and references

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