Area determination with pile-up and sink-in in nanoindentation of oxygen containing titanium

Homogenous thin foils of titanium with oxygen in interstitial solid solution covering the broad solubility range O h.c.p. Ti, were used to investigate sink-in and pile-up occurring during nanoindentation. The anisotropic response indent areas accurately analyzed atomic force microscopy. mechanical properties assessed using both Oliver&Pharr method a newer incorporating corrections for indenter geometry an improved parameter extraction. accounts pile-up.