Figure 2 | Scientific Reports

Figure 2

From: Heterogeneous precipitation mediated heterogeneous nanostructure enhances strength-ductility synergy in severely cryo-rolled and annealed CoCrFeNi2.1Nb0.2 high entropy alloy

Figure 2

(a) TEM micrograph (observed on the RD-TD (Rolling Direction-Transverse Direction) plane along the ND (Normal Direction)) of the cold-rolled HEA, and the associated SADPs show nanocrystalline FCC (green spot), Laves phase (red spot) and Nb-rich FCC (yellow spot) phases; (b) TEM micrograph illustrating the microstructure of the cold-rolled HEA observed on the RD-ND (Rolling Direction-Normal Direction) plane along the TD (Transverse Direction); (c,d) TEM micrographs showing microstructural evolution in 90% cold-rolled and annealed (800 °C/1 h) HEA. The TEM micrographs and associated SADPs show the recrystallized FCC grains (green), Laves phase (red), and ε nano-precipitates (blue). The nano-precipitates are marked by blue arrows in (d) for clarity.

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