| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Surface Engineering VII
|
| Presentation Title |
Microstructural Evolution and High Temperature Tribology of Wrought and Additively Manufactured Nickel-based Superalloy Subjected to Surface Enhancement Processes |
| Author(s) |
Ali Beheshti, Manisha Tripathy, Lloyd Hackel |
| On-Site Speaker (Planned) |
Ali Beheshti |
| Abstract Scope |
This presentation covers a microstructural and wear study of printed and wrought Inconel 625 as well as Inconel 617 superalloys. The wear behavior is evaluated up to 900°C in air and helium environments. In addition, samples are subjected to shot peening (SP) and laser peening (LP) processes as well as a novel thermally-engineered (LP) process to measure the extent of tribological enhancements. Additively manufactured samples exhibited higher wear at room temperature while showing significantly less wear at elevated temperatures than the wrought samples. In addition, combination of aging, thermal annealing and LP processes showed significant stable reduction in coefficient of friction and wear for Inconel 625 and 617. Compared to shot peening process, laser peening effect penetrates deeper to the surface with refined microstructures which results in only laser peened samples to show stable improved tribological properties. Some suggestions to make LP effective at elevated temperatures will be also discussed. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Surface Modification and Coatings, Copper / Nickel / Cobalt, High-Temperature Materials |