Transmission electron microscopy analysis of the crystallography of precipitates in Mg–Sn alloys aged at high temperatures

Nie, X.; Guan, Y.; Zhao, D.; Liu, Y.; Gui, J.; Li, L.; Wang, J.

doi:10.1107/S160057671401958X

Figure 6
(a) HRTEM image of the area bounded by a dashed lines marked as II in the inset in Fig. 4

(c) for the as-cast Mg–9.76 wt% Sn alloy aged at 573 K for 5 h, along the $[{[001]_\beta }//{[2\overline 1\overline 10]_\alpha }]$ direction. The inset shows a simulated HRTEM image created according to the atomic structure model of the interface. (b) Atomic resolution HAADF-STEM image corresponding to the area enclosed by the large dashed square in (a) along the $[{[001]_\beta }//{[2\overline 1\overline 10]_\alpha }]$ direction. The inset shows the proposed atomic structure model of the interface between the $[{(220)_\beta }]$ plane of a β-Mg₂Sn particle with OR-4 and the $[{(0001)_\alpha }]$ plane of the α-Mg matrix projected along the $[{[001]_\beta }]$ and $[{[2\overline 1\overline 10]_\alpha }]$ directions. (c) HRTEM image of the area bounded by the dashed lines marked as I in Fig. 4

(c), along the $[{[\overline 111]_\beta }//{[1\overline 210]_\alpha }]$ direction. The inset shows the corresponding simulated HRTEM image. (d) Atomic resolution HAADF-STEM image of the area in (c). The inset shows the proposed atomic structure model of the interface between the $[{(220)_\beta }]$ plane of a β-Mg₂Sn particle with OR-3 and the $[{(0001)_\alpha }]$ plane of the α-Mg matrix projected along the $[{[\overline 111]_\beta }]$ and $[{[1\overline 210]_\alpha }]$ directions.

JOURNAL OF
APPLIED
CRYSTALLOGRAPHY

ISSN: 1600-5767

Volume 47| Part 5| September 2014| Pages 1729-1735

doi:10.1107/S160057671401958X

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