|About this Abstract
||Materials Science & Technology 2020
||Additive Manufacturing: Qualification and Certification
||Recyclability of Ti-6Al-4V Powders Used in Additive Manufacturing
||Nicholas A. Derimow, Nikolas Hrabe
|On-Site Speaker (Planned)
||Nicholas A. Derimow
Titanium alloys are widely used in industry for their high strength-to-weight ratios and good corrosion resistance. However, titanium’s affinity for oxidation leads to costly processing environments to maintain purity of the finished product. The lifetime of a Ti-6Al-4V powder batch is determined by how many times it can be recycled across builds, as oxygen pickup will increase to a level that is no longer acceptable and will need to be discarded. The source of oxygen is often assumed to be water vapor trapped in the powder during exposure to atmosphere during powder handling outside the AM machine. However, other potential sources of oxygen have not been investigated despite the potential to have an equivalent magnitude effect. This example knowledge gap, and others presented in this talk, will demonstrate significant opportunity to further optimize this process to achieve increased powder batch lifetime and reduce overall process cost.