| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Powder Materials Processing and Fundamental Understanding
|
| Presentation Title |
Thermogravimetric Analysis of Additive Ti-6Al-4V Powders in Gaseous Environments |
| Author(s) |
Nicholas A. Derimow, Elisabeth Mansfield, Nik Hrabe |
| On-Site Speaker (Planned) |
Nicholas A. Derimow |
| Abstract Scope |
In titanium alloy (Ti-6Al-4V) powder-bed fusion (PBF), powder feedstock is reused to maintain optimal process cost, with oxygen increases being the limiting factor to reuse. Typically, powder is blended and reused until oxygen content reaches unacceptable levels. This oxidation occurs thermodynamically due to titanium’s gettering properties occurring more rapidly at elevated temperatures. Throughout the PBF and reuse process, these powders can be exposed to a variety of thermal histories and cover gas environments. This work assesses the oxidation kinetics of Ti-6Al-4V alloy of varying grade (Grade 5 and Grade 23) and powder size distributions. The effects of different cover gasses (Ar, He) and in situ gas purification will be discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Titanium, Powder Materials |