Dislocation structures around Vickers indents in 9·4 mol% Y₂O₃-stabilized cubic ZrO₂ single crystals

Abstract

Transmission electron microscopy and dislocation etch pit techniques were used to examine the dislocation structure around elevated-temperature indentations on {111} and {001} surfaces of 9·4 mol% Y₂O₃-stabilized cubic ZrO₂ single crystals. The activated slip systems were identified and the geometry of the plastic zone characterized. The effect of the plastic zone on radial crack formation was also examined.