The formation of an amorphous phase beneath a Vickers indentation, produced on a (001) surface at room temperature, was observed by means of cross-sectional transmission electron microscopy. Two types of location were observed for the amorphous phase. One was formed just below the image of the indentation, and the other was parallel to the slip planes. It was concluded that the latter type formed as a result of an activation of dislocations which was induced by an external shear stress combined with a hydrostatic pressure.

On the Dislocation Mechanism of Amorphization of Si by Indentation. M.T.Suprijadi, S.Arai, H.Saka: Philosophical Magazine Letters, 2002, 82[3], 133-9