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![New vision of convection induced freckle formation theory in nickel-based superalloys by electron microscopy](https://image.oaes.cc/55fc793c-9fbd-49e6-ae42-fc848eed6345/microstructures4047.fig.6.jpg)
Figure 6. Deflection behavior of borides. (A) BF-STEM image of M5B3 borides sampled from the interface between the matrix and the freckle. Among them, four borides were selected for further study, in which boride 1 is located at the γ/ phase boundary and the others are at the grain boundary. (B) A TKD - phase distribution map, in which borides are marked with black arrows. (C) A TKD - orientation map, in which three-dimensional unit cells of matrix, freckles, and borides are shown to understand their orientation relationship. (D-O) HAADF-STEM, FFT, and high-magnification HAADF-STEM images of the interface between alloys and borides 1-4. (P-S) Schematic diagrams of four borides, respectively.