Performance of Laser Surface Preparation of Ti6Al4 V

Surface preparation is a critical step for applications as diverse as bonding, corrosion or fatigue resistance improvement of mechanical parts. For Ti6Al4 V bonding, sandblasting and/or chemical treatments are generally used to modify the surface topology and achieve adequate chemical conversion. Recently, laser surface preparation have been proposed as a promising alternative to the traditional methods. In this article, the surface of Ti6Al4 V plate are observed after being exposed to laser treatment. The influence of the accumulated fluence through several scan speed and overlap ratio is analyzed. The surface morphology is investigated using SEM, optical microscopy and 3D profilometer. These observations are compare with a analytical irradiation model to evaluate the resulting texture pattern according to the laser settings.