TY - JFULL AU - Josef Sepitka and Petr Vlcak and Tomas Horazdovsky and Vratislav Perina PY - 2016/1/ TI - Nanomechanical Characterization of Titanium Alloy Modified by Nitrogen Ion Implantation T2 - International Journal of Materials and Metallurgical Engineering SP - 1450 EP - 1454 VL - 10 SN - 1307-6892 UR - https://publications.waset.org/pdf/10005936 PU - World Academy of Science, Engineering and Technology NX - Open Science Index 120, 2016 N2 - An ion implantation technique was used for designing the surface area of a titanium alloy and for irradiation-enhanced hardening of the surface. The Ti6Al4V alloy was treated by nitrogen ion implantation at fluences of 2·1017 and 4·1017 cm-2 and at ion energy 90 keV. The depth distribution of the nitrogen was investigated by Rutherford Backscattering Spectroscopy. The gradient of mechanical properties was investigated by nanoindentation. The continuous measurement mode was used to obtain depth profiles of the indentation hardness and the reduced storage modulus of the modified surface area. The reduced storage modulus and the hardness increase with increasing fluence. Increased fluence shifts the peak of the mechanical properties as well as the peak of nitrogen concentration towards to the surface. This effect suggests a direct relationship between mechanical properties and nitrogen distribution. ER -