Metal Additive Manufacturing Conference 2018

Today Ti6Al4V alloy, also known as Titanium Grade 5, is in use worldwide. However, several authors studied the difficulty of its machining due to their low thermal conductivity, high chemical reactivity at high temperatures or low modulus of elasticity, which can lead to damage vibrations in the specimen. In view of the above, a manufacturing technology is developed, and it is revolutionizing the industries in recent years. In this study, several specimen have been manufactured via AM by the use of the injection of powder using a Plasma Transferred Arc Welding technique. The seam was made from Titanium Gd5 powder, with particles of a size between 100-200 µm, on a substrate of the same material and several PTA parameters were varied and investigated. The purpose of this study is to identify the main processing parameters whose effect was more significant and notorious on the hardness, density and microstructure of the specimens. With this respect, the optimal processing conditions were found to be achieved.