Dislocation generation in alumina deformed by impact loading

Strain-rate effects in high-purity alumina

“…This is consistent with previous studies in which plasticity was observed in shock-loaded sapphire 19 and polycrystalline alumina. 20 The presence of the large spall strength of the JS-I at three times the HEL also supports the argument that the material has not undergone a state of general microcracking.…”