Figure 1 | Scientific Reports

Figure 1

From: Local decomposition induced by dislocation motions inside precipitates in an Al-alloy

Figure 1

(a) HAADF image showing the microstructural characteristics of the as-received dual-phase material. The particles embedded in Al matrix are tetragonal θ-Al2Cu precipitates, verified by X-ray diffraction and a series of electron diffraction patterns. (b) HAADF image of an area within a single crystalline Al2Cu precipitate along [001] crystallographic direction (see inset). (c) and (d) are elemental maps of Al and Cu, respectively, corresponding to the area squared in (b). Both Al and Cu are homogeneously distributed. (e) Micrograph showing an array of dislocations in the precipitate induced by deformation. (f) Bright-field TEM image showing slip bands on (110) crystallographic planes in an Al2Cu particle. (g) HAADF image of the same area as that in (f) shows clear contrast variation along the slip band. The bottom-left inset is a section along this slip band marked with black rectangle. The up-left inset is an EDP of zone axis from the area marked with a black circle.

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