Abstract
The application of Titanium and its alloys are found in various industries such as Aerospace, Human implant,
Automotive, Chemical processing, Geothermal, and Armoury etc. The unique properties of Titanium have made
it immune to all forms of environmental attacks such as the urban pollution, marine and industrial. However, It
is believed that all manufacturing processes often influences the materials and mechanical properties of the
processed material.. This paper reports on the corrosion behaviour of Laser Beam Formed Titanium Alloy.
Titanium sheets were laser formed using three constant parameters (laser power of 0.8kW, the beam diameter of
12 mm and scan speed of 0.03m/min) and varied paramter which is the number of scans – 3, 5 and 7. The
corrosion behaviour was after that investigated in a 3.5% NaCl solution using the Potentiodynamic Polarization
technique. The Potentiodynamic polarization curves were measured at a scan rate of 2mV/s starting from
1000.0mV concerning OCP to 1100mV. The result revealed that the parent material had the most significant
resistance to corrosion and the lowest corrosion rate per year. While for the Laser formed Titanium sheets, it
was observed that as the number of scans increases the resistance to pitting was increased. However, the
Titanium sheets samples formed at seven and five laser scans developed microcracks on the surface of the
samples even though the resistance to corrosion is improved with the two sets of samples. These defects render
the laser formed titanium sheets undesirable for intended applications.