Fig. (9) Scanning electron microscopy of surface: 500X magnification, scale bar 10um, Group I; (a) as received, (c) tensile post-specimen, (e) torsion post-specimen, (g) Three-Point bending post-specimen; Group II; (b) as received, (d) tensile post-specimen, (f) torsion post-specimen, (h) Three-Point bending post-specimen.