About this Abstract |
Meeting |
2024 TMS Annual Meeting & Exhibition
|
Symposium
|
Additive Manufacturing: Process-induced Microstructures and Defects
|
Presentation Title |
F-55: Secondary Phase Characterisation of Wire Arc Additive Manufactured Superalloys |
Author(s) |
William Sean James, Supriyo Ganguly, Goncalo Pardal |
On-Site Speaker (Planned) |
William Sean James |
Abstract Scope |
In developing the wire + arc additive manufacturing (WAAM) process for creep resistant superalloys, structures were built from nickel-based superalloy Rene 41 and cobalt-based superalloy Haynes 188. The microstructure was analysed to determine composition of significant secondary phases, and the potential impact that these phases would have on alloy performance for a high-speed flight application.
The WAAM process results into primary solidification of molten droplets, the resultant product will always be subject to segregation of different atomic species. The mechanical properties of such deposits will therefore depend upon the heat input from the process. Mechanical working has the potential to recover the strength lost due to segregation, as observed in aging response of such alloys, when compared with wrought alloys. In this paper an attempt has been made to identify the impact of segregation and mechanical working on performance for high-speed flight through advanced microscopy and high temperature testing. |
Proceedings Inclusion? |
Planned: |
Keywords |
Additive Manufacturing, Characterization, High-Temperature Materials |