About this Abstract |
| Meeting |
MS&T25: Materials Science & Technology
|
| Symposium
|
Additive Manufacturing: Development of Powders
|
| Presentation Title |
Investigating Process Parameters of WA IN740H in PBF-LB |
| Author(s) |
Sarah Birchall, Junwon Seo, Anthony Rollett, Bryan Webler |
| On-Site Speaker (Planned) |
Sarah Birchall |
| Abstract Scope |
This work focuses on the fabrication of water atomized (WA) 740H parts by exploring various process parameters for laser powder bed fusion (PBF-LB) additive manufacturing (AM). The use of WA metal powders has become a cost-effective alternative to gas atomized (GA) powders in PBF-LB. WA powders contain high amounts of surface oxygen and are highly irregular in shape; however, GA powders are more spherically shaped making them more commonly used in PBF-LB. This project investigates several process parameters being tested to produce highly dense parts with good creep resistance and high yield strength. As a baseline, the WA 740H parts are compared to GA H282 parts for mechanical property requirements. Both alloys are Nickel-based superalloys with similar chemical compositions. This talk will include results from multiple builds of WA IN740H consisting of porosity measurements, mechanical testing, and the analysis of these findings. |