Cutting Forces and Mechanical Resistance of Pure Titanium Processed by Equal Channel Angular Pressing

摘要

Implants are usually manufactured in titanium alloys due to their biocompatibility and high corrosion resistance. The additional elements present in titanium alloys increase the mechanical properties but also increase the possibility of infectious-inflammatory processes in the implanted region. Commercially pure titanium (CP Ti) has lower mechanical properties, but it can be processed by severe plastic deformation for grain refining and enhancement of mechanical behavior. This paper compares the machinability of different workpieces, manufactured in CP-Ti and CP-Ti powder processed by Equal Channel Angular Pressing (ECAP), using cutting forces as the reference parameter. Although mechanical properties are improved, cutting force experiments show that extruded specimens presented same level of machinability of CP-Ti bar.