Microindentation and Inverse Analysis to Characterize Elastic-Plastic Properties for Thermal Sprayed Ti{sub}2AIC and NiCoCrAlY

摘要

Elastic-plastic material properties for HVOF sprayed Ti{sub}2AlC (sprayed with Maxthal 211 powder) and plasma sprayed NiCoCrAlY coatings were investigated using modeling and experimental Berkovich microindentation. Optical microstructure evaluations were also performed. The theories of Hertz, Oliver and Pharr were combined with finite element analysis for extracting the material properties. Empirically based material models for both thermal sprayed Ti{sub}2AlC and NiCoCrAlY coatings are proposed.