Comparative Study of Indentation Size Effects in As-Sintered Alumina and Alumina Shock Deformed at 6.5 and 12 GPa
Figure 9
FE-SEM photomicrographs of SA samples obtained from 6.5 GPa (a, b, c) and 12 GPa (d, e, f) shock experiments: (a) nano scale slip band formation (denoted by white hollow arrowhead), (b) shear induced intra-grain microcrack formation (denoted by white solid arrowhead) in a single grain and (c) shear induced complex intragranular microcleavage (denoted by “MC” with a single-line arrow) (d) extensive grain localized shear band formation (denoted by white hollow arrowhead) and grain boundary microcracking (denoted by white solid arrowhead), (e) grain boundary microcracking (denoted by white solid arrowhead) and (f) very complex intragranular microcleavage (denoted by “MC” with a single line arrow).
