| Abstrakt: |
Ti-6Al-4V is the most common titanium alloy for implant application. However, Ti-6Al-4V has disadvantages that this alloy's vanadium element. Vanadium is a toxic element and may cause potentially serious health problems. In this study, Vanadium was substituted with Niobium to obtain an alpha/beta titanium alloy which is safe for use in the human body as an orthopedic material. The Hot Rolling process carried out Ti-6Al-6Nb to improve its mechanical properties. Hot rolling is carried out at 900, 1000, and 1100 °C temperatures. Microstructural observations with optical microscopy (OM), scanning electron microscope (SEM), and hard tests were carried out to observe changes in microstructure and hardness after melting, homogenization, and hot rolling processes. The study revealed that hot rolling at 1000 °C has the lowest hardness, and rolling at 900 °C has the highest hardness value. The finer grain size most influenced to the increasing hardness value of hot rolled Ti-6Al-6Nb. [ABSTRACT FROM AUTHOR] |
