Effekte der Indentergeometrie und innerer Materialpannungen auf die Ergebnisse von Kraft-Eindringtiefe-Messungen

Effects of indenter geometry and internal Stresses to the results of load-indentation measurements. Loadcindentation measurements were performed on hardened high speed steel, glass and TiN/steel coating-substrate composites with Vickers and Berkovich indenters. The coatings were deposited with selected parameter sets to produce different internal coating stresses. The evaluation of the load-indentation measurements was performed by energy related considerations of the deformation processes. Two material- and indenter-related specific energies are calculated which describe the extension of the energetic densification zone caused by the penetration of the indenter. The specific energy density of volume change could be related to the two types of indenters. The specific energy of area change has been related to internal stresses in the probed material.