Fig. 5: The molecular dynamics simulation results revealing phase transformation mechanism of the Al18Co30Cr11Fe11Ni30 eutectic high entropy alloy. | Communications Materials

Fig. 5: The molecular dynamics simulation results revealing phase transformation mechanism of the Al18Co30Cr11Fe11Ni30 eutectic high entropy alloy.

From: Overcoming strength-toughness trade-off in a eutectic high entropy alloy by optimizing chemical and microstructural heterogeneities

Fig. 5: The molecular dynamics simulation results revealing phase transformation mechanism of the Al18Co30Cr11Fe11Ni30 eutectic high entropy alloy.

a Snapshots of the calculation cell showing the FCC-BCC transformation process with the K-S orientation relationship. Only atoms with BCC configuration are shown. b–c Cross-sectional view of the FCC/BCC interface with 3D displacement vectors. Colors denote the local crystal structure. d–e Enlarged view of the black dotted rectangular area in (b, c), respectively. f Schematic representation of the FCC → BCC phase transformation mechanism. g Cross-sectional view showing the nucleation of the BCC phase at the FCC/BCC interface and (h) the extracted dislocation lines ahead of transition region for the two-step-shear transformation mechanism. i Enlarge view of the black dotted rectangular area in (h).

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