Experimental study on effect of deformation temperature on mechanical and biological activities of Ti-6Al-7Nb titanium alloy

Abstract

Abstract Titanium alloy plays a crucial role in biomedical applications, particularly in the field of medical implants. One of the most significant advantages of Titanium alloy is its excellent biocompatibility. Eventhough, it offered excellent behaviour, at elevated temperature, titanium alloys may experience softening, which limits their application in environments with higher operating temperatures. In this investigation, hot tensile and biological behaviour of the Ti-6Al-7Nb under different operating temperatures (300oC, 400oC, 500oC and 600oC) is studied. The biological behaviour of the deformed Ti-6Al-7Nb titanium alloy treated with simulated body fluid is studied. The microstructure and phase transformation of deformed titanium alloy is evaluated using scanning electron microscope (SEM) and X-Ray diffraction (XRD) respectively. It was revealed that at temperature of 600oC, the mobility of molecules at the interface between the solid and liquid phases increases. This enhanced mobility can lead to better wetting of the solid surface by the liquid, resulting in a decrease in the contact angle. Elevated temperature facilitates improved grain development, recrystallization, and mobility. Coarser grains could result from deformation at temperature higher than 600°C. It was concluded that the Ti-6Al-7Nb titanium alloy deformed with 600oC showed the improvement in contact angle of 42±2o and biocompatibility.