| About this Abstract |
| Meeting |
MS&T22: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing of Metals: Microstructure, Properties and Alloy Development
|
| Presentation Title |
LPBF of Tungsten Heavy Alloys |
| Author(s) |
Matthew Feurer, Elias Jelis |
| On-Site Speaker (Planned) |
Matthew Feurer |
| Abstract Scope |
The U.S. Army is interested in the development of high density alloys (>15 grams/cm3) to enhance target penetration. Laser powder bed fusion is a manufacturing method to produce complex geometries to maximize effectiveness for lethality. There has been limited success with laser powder bed fusion tungsten heavy alloy at lower binder content (<10 wt%) for small size test coupon after post processing (Liquid Phase Sintering). Therefore, higher alloy content material systems were explored in this study. Material compositions included W-20 wt% Fe, W- 14 wt% Ni- 6 wt% Fe, and W-Ta powder blends. The manufacturability of the different materials were evaluated on the smaller EOS M100 to minimize the use of metal powder. This will determine whether or not the material system has the potential to be scaled up to larger systems such as EOS M290 or equivalent in the future. Powder properties and microstructure of printed material are evaluated for each material system. |