| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Quantifying Microstructure Heterogeneity for Qualification of Additively Manufactured Materials
|
| Presentation Title |
Optimizing Creep Performance of Haynes 282 Printed via Laser Powder Bed Fusion through Microstructure Control |
| Author(s) |
Nicholas L. Lamprinakos, Junwon Seo, Gregory Wong, Anthony Rollett |
| On-Site Speaker (Planned) |
Nicholas L. Lamprinakos |
| Abstract Scope |
As-built parts produced via laser powder bed fusion (LPBF) often have heterogeneous microstructures which can significantly affect their mechanical properties. The printed microstructure is dependent on the specific printing parameters used, so there is an opportunity to tailor the microstructure based on a part’s intended application. In this work, microstructural control of printed Haynes 282 was explored with the goal of maximizing high temperature creep performance. A modified Potts model was used to predict the printed microstructure based on input process parameters. This was correlated with experimental microstructures. Since Haynes 282 typically requires post-fabrication heat treatment, experimental heat treatments were performed on the printed parts to observe how the printed microstructures would evolve under differing heat treatment cycles. Particular interest was taken in preserving the as-printed crystallographic texture while still allowing desired precipitate structures to form. Finally, creep testing was performed to correlate the microstructure to the creep performance. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Copper / Nickel / Cobalt, Mechanical Properties |