About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Nanoindentation Studies on the Surface Properties of Additively Manufactured Ni-base Alloys |
| Author(s) |
Youxing Chen, Oliver Bürgi, Alex Bridges, Liuqing Yang, John Shingledecker |
| On-Site Speaker (Planned) |
Youxing Chen |
| Abstract Scope |
Additive manufacturing (AM) has been increasingly used for Ni-base gas turbine components over the last decade. However, compared to conventional Ni-base alloys, AM alloys have distinct microstructures in terms of porosity, texture, precipitate, and residual stress. To replace conventional Ni-base alloys with AM components, the investigation of microstructure and corresponding properties of as-printed and post-treated AM components is critical. Nanoindentation is a unique technique to probe surface properties at the micrometer and sub-micrometer scales in a high-throughput manner, which is a promising tool to explore the localized mechanical property variation stemming from microstructure and residual stress in AM Ni-base alloys. The study will focus on a novel nickel-base superalloy (ABD®-900AM) that was manufactured using a laser-based powder bed fusion AM process. The role of grain anisotropy, precipitates, and boundaries on strengthening and creep underneath the indenter tip will be investigated by nanoindentation. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, |