About this Abstract |
Meeting |
2021 TMS Annual Meeting & Exhibition
|
Symposium
|
Environmental Degradation of Additively Manufactured Alloys
|
Presentation Title |
Effect of High-temperature Oxidation on the Fatigue Properties of Inconel 625 Fabricated by Laser Additive Manufacturing |
Author(s) |
Grace Vanessa De Leon Nope, Juan Manuel Alvarado-Orozco, Guofeng Wang, Brian Gleeson |
On-Site Speaker (Planned) |
Grace Vanessa De Leon Nope |
Abstract Scope |
This study assesses and compares the role of high-temperature oxidation on the high cycle fatigue of wrought and LAM-processed Inconel 625. Previous work demonstrated that different cooling rates in LAM processes impact Nb and Mo segregation in the primary solidification of 625; in turn, a different subsurface phase evolution results from high-temperature oxidation (800°C - 950°C). To evaluate the effect of the subsurface microstructure on the fatigue crack initiation stage, high cycle fatigue tests at room temperature in lab air were performed on wrought and LAM-processed 625 samples subjected to no or one of to two pre-oxidation times. Detailed mesostructural, microstructural, and fractographic characterizations were performed before and after the fatigue testing. |
Proceedings Inclusion? |
Planned: |
Keywords |
High-Temperature Materials, Additive Manufacturing, Mechanical Properties |