Figure 10

(a) Bright field image of the second area of interest, at low magnification; the matrix (M) is depicted in yellow, the primary twin (\({\textrm{T}}_1\)) in red, the secondary twin (\({\textrm{T}}_2\)) in blue, the tertiary twin (\({\textrm{T}}_3\)) in green. (b) HRTEM image of the region denoted by the blue circle in (a); boundaries have been drawn using the following colour scheme. Yellow: \((10\bar{1}1)\) plane of the matrix and primary twin; green: B3Py facets of the double twin; purple: PPy facets of the double twin. (c) Indexed SAD pattern of the region denoted by the blue circle in (a). (d) Indexed SAD pattern of the region denoted by the yellow circle in (a). (e) HRTEM image of the region denoted by the yellow circle in (a); boundaries have been drawn using the following colour scheme. Yellow: \((10\bar{1}1)\) plane of the matrix and primary twin; red: PyB facets of the primary twin; green: P3Py facets of the primary twin; purple: BPy facets of the primary twin; red: PyB facets of the primary twin.