| About this Abstract |
| Meeting |
2020 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advancing Current and State-of-the-Art Application of Ni- and Co-based Superalloys
|
| Presentation Title |
Advancing Alternate Processing of Rene 65 with Additive Manufacturing |
| Author(s) |
Kelsey D. Rainey, Laura Dial, Andrew Wessman |
| On-Site Speaker (Planned) |
Kelsey D. Rainey |
| Abstract Scope |
Rene 65 is a gamma prime strengthened nickel superalloy developed by GE Aviation primarily for manufacturing disks for turbine engines using forging processes. Differences in the processing route utilizing DMLM result in very different metallurgical structures relative to wrought material. The DMLM process results in an as-built cellular structure of gamma prime formers, with no discrete gamma prime precipitates. Subsequent heat treatment processes enable these discrete precipitates to form, but in different size distributions than one would observe in the wrought material, even for an identical thermal treatment. Supersolvus heat treating the DMLM material does not cause uncontrolled grain growth as seen in wrought material. Consequently, the microstructure and mechanical properties of the DMLM material differ from wrought material even as chemistry and heat treatment conditions remain unchanged, and this provides an opportunity to optimize the material for the properties desired in a variety of applications suitable for additive manufacturing. |
| Proceedings Inclusion? |
Planned: Supplemental Proceedings volume |