Nanoindentation study on Ti-24Nb-4Zr-8Sn single crystals

Nanoindentation techniques were used to determine the hardness and elastic modulus of Ti-24Nb-4Zr-8Sn (abbreviated as Ti-2448) single crystals with different orientation surfaces. Both hardness and elastic modulus anisotropy were observed. The indentation modulus is 68.1, 69.1 and 78.9 GPa on (001), (011) and (111) surfaces, respectively, and the indentation hardness is 3.0, 3.5 and 3.5 GPa, respectively. The variation of the hardness and elastic modulus tested by nanoidentation is consistent with that obtain by the conventional testing method, but the results could not transfer to that of conventional testing method.