Figure 2: Microscopy and elemental analyses. | Nature Communications

Figure 2: Microscopy and elemental analyses.

From: Deviation from high-entropy configurations in the atomic distributions of a multi-principal-element alloy

Figure 2

(a) The high-resolution SEM micrograph is colour coded according to EDS, highlighting how the elements segregate and enrich the room temperature phases (B2, BCC and FCC). Scale bar, 0.5 μm. (b) The abundance of each individual element is shown in a series of TEM/EDS images of the same sample region. The selected sample area includes a contiguous B2 region, with two rectangular (roughly) BCC phases, at the bottom and left side, and smaller circular FCC nanopreciptitates. The EDS reveals that Al and Ni are nearly exclusive to the B2 phase (that is, the other regions appear black), Co and Fe are present in both the B2 and BCC phases and Cr is nearly exclusive to the BCC phase. Cu is found nearly exclusively in the nanopreciptitates, which are FCC or ordered variants. The larger FCC interdendritic regions and rod-shaped precipitates, not shown here, also contain mostly Cu. Scale bar, 0.1 μm.

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