Elastic Constants in a Cantor Alloy

The TCS High Entropy Alloys Database (TCHEA) has elastic properties included starting with version 8 (TCHEA8).

This application example shows where the elastic constants are calculated as a function of temperature for a single-phase FCC_A1 and near-equiatomic CoCrFeMnNi alloy, commonly referred to as a Cantor alloy.

In the calculation setup, the composition Co21.1Cr20.9Fe19.7Mn16.7Ni21.6 (at. %) is used, which is experimentally measured by [2019Ter]. The resulting values of the elastic constants are in good agreement with the experimental data from [2019Ter; 2021Kaw].

Elastic constants of the FCC_A1 Cantor alloy Co21.1Cr20.9Fe19.7Mn16.7Ni21.6 (at. %) as a function of temperature compared to experimental data

Figure 1: Elastic constants of the FCC_A1 Cantor alloy Co21.1Cr20.9Fe19.7Mn16.7Ni21.6 (at. %) as a function of temperature compared to experimental data from [2019Ter; 2021Kaw].

References

[2019Ter] T. Teramoto, K. Yamada, R. Ito, K. Tanaka, Monocrystalline elastic constants and their temperature dependences for equi-atomic Cr-Mn-Fe-Co-Ni high-entropy alloy with the face-centered cubic structure. J. Alloys Compd. 777, 1313–1318 (2019).

[2021Kaw] M. Kawamura, M. Asakura, N. L. Okamoto, K. Kishida, H. Inui, E. P. George, Plastic deformation of single crystals of the equiatomic Cr−Mn−Fe−Co−Ni high-entropy alloy in tension and compression from 10 K to 1273 K. Acta Mater. 203, 116454 (2021).