Research of the heterogeneous alloy properties via indentation and finiteelement method simulation

The energy exchange processes in heterogeneous alloy 30%Co-70%WC were studied via microindentation and FEM. The indentation shown that alloy dissipated 271±45.4 nJ of absolute possible 463±49.8 nJ and recovered 62±4.1 nJ. The results of FEM proved that high effective stress spread in ~26% of hardened volume that laid directly under the imprint. It was also noted that shape of the hardened area tend to form a sphere. It is worth to mentioned that the specific work for elasto-plastic deformation of 1μm3 alloy volume was equal to А=93.68±21.42μJ.