New method for nanohardness measurement of single crystal aluminum(Al)

Nanohardness is an important mechanical properties of materials most used to characterize the wear resistance of materials. In this present paper a procedure is developed for calculation of nanohardness by nanoindentation and an atomic force microscope (A.F.M).A three sided pyramidal diamond tip has been used for the indentation experiment. Experiment has been concluded on single crystal aluminum (AI). The load displacement data have been used to obtain the nanoindentation hardness and the room temperature nanohardness properties of single crystal Al have been investigated at different indentation loads. Comparison of the data obtained using nano indenter with that obtained by using new technique was briefly discussed. It has been shown that the measured nanohardness values of the material sensitively depend on the applied load of indentation. It is also shown that the measured nanohardness is smaller than indentation hardness.