were prepared with respect to grain orientation of the flat plane; parallel (PR specimen) and perpendicular (PP specimen) as illustrated in Fig. 2a and b, respectively. The dimensions of each piece were 13 cm × 13 cm (cross-section) × 2 cm (thickness).
were prepared with respectto grain orientation of the flat plane; parallel (PR specimen) and perpendicular(PP specimen) as illustrated in Fig. 2a and b, respectively. The dimensionsof each piece were 13 cm × 13 cm (cross-section) × 2 cm(thickness).