Fig. 4
From: Three-dimensional character of the deformation twin in magnesium

Statistical results confirm irregular twin shapes in the TPN view. a Number of twins that are categorized as Type 0 (no grain boundary (GB) junction), Type 1 (one GB junction), and Type 2 (two GB junctions) corresponding to sections in the BS, DS, and TPN view. Statistical distribution and relationship of: b k1 versus the long axis η1 for BS twin sections; c k1 versus the long axis λ for DS twin sections; d η1 versus λ for TPN twin sections. In all cases the maximum value of the axes in each twin section was selected for the plots. The statistical results confirm the lenticular twin shape in the BS and DS view, and the irregular twin shape in the TPN view. d The fact that η1 < λ suggests that lateral growth is faster when λ < 40 μm