Fig. 2

Microstructures of the CoCrFeNiNb0.25 (a, d), CoCrFeNiNb0.45 (b, e) and CoCrFeNiNb0.65 (c, f) alloys in the form of ingots (a-c) and plates (d-f).
Microstructures of the CoCrFeNiNb0.25 (a, d), CoCrFeNiNb0.45 (b, e) and CoCrFeNiNb0.65 (c, f) alloys in the form of ingots (a-c) and plates (d-f).