Laser beam welding of cast commercial pure titanium

Abstract

In this work the joining by Laser Beam Welding (LBW) technique of commercial pure Titanium (CP Ti) cast specimens was carried out. The specimens considered for welding trials were cylindrical and flat (parallelepiped shape) ingots of little dimensions, as utilised in dentistry applications.

The welds were investigated by optical and scanning electron microscopy (SEM) and by X-ray diffraction (XRD) measurements; mechanical properties were experimented by Vickers microhardness, across traverses through the welded sections, and by tensile tests, performed, for comparison, also on unwelded specimens in as cast condition; fractured surfaces after tensile tests were observed by SEM.