About this Abstract |
| Meeting |
2027 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing for Energy Industry
|
| Presentation Title |
Improving the Creep Properties of GMA-DED Haynes 230 with Post-Build Heat Treatment |
| Author(s) |
Joshua Rouault, Dominic Piccone, Daniel McConville, Jonah Klemm-Toole |
| On-Site Speaker (Planned) |
Joshua Rouault |
| Abstract Scope |
Haynes 230 is a nickel-based superalloy commonly used for high temperature structural components in power generation applications, and gas metal arc directed energy deposition (GMA-DED) can produce larger parts needed for such applications beyond other additive processes such as laser powder bed fusion (LPBF). Prior work has showed that the creep performance of GMA-DED Haynes 230 falls well below wrought and crack-free LPBF versions of the alloy and is instead comparable to crack-containing LPBF despite being crack-free. We hypothesize the origin of the inferior creep performance of GMA-DED Haynes 230 is insufficient carbide precipitation during creep. To promote M23C6 precipitation, we evaluated post-built heat treatments from 950 to 1100 °C and 1 to 11 h holds, using Vickers hardness to identify peak strengthening. Creep tests are performed at 760 °C and directly compared to prior GMA-DED, LPBF, and wrought creep results in the literature. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Copper / Nickel / Cobalt, Mechanical Properties |