| About this Abstract |
| Meeting |
2025 TMS Annual Meeting & Exhibition
|
| Symposium
|
Fatigue in Materials: Fundamentals, Multiscale Characterizations and Computational Modeling
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| Presentation Title |
How Can the Non-Metallic Inclusions Distribution Lead to an Anisotropy in the Fatigue Life Durability of Forged γ/γ′ Ni-Based Disks Alloys? |
| Author(s) |
Adèle Govaere, Moubine Al Kotob, Xavier Baudequin, Romain Lambert, Caitline Lasne, Alexia Wu, Azdine Nait-Ali, Cormier Jonathan, Malo Prié |
| On-Site Speaker (Planned) |
Adèle Govaere |
| Abstract Scope |
The impact of non-metallic inclusions (NMIs) and the forging process on the low-cycle fatigue (LCF) durability of a γ/γ' superalloy is investigated. X-ray synchrotron tomography was performed to characterize the NMIs populations. Low cycle fatigue was tested at 400 °C on specimens taken in various orientations on forged disks using the ring rolling process or the die forging one. The results show anisotropic tensile and fatigue properties for the ring rolled disks, especially in radial and axial directions. On the other hand, no reduction of the lifespan was observed for the die forged ones. Fractographic observations and a macroscopic approach in modelling of a particle during forging were conducted. The length of NMIs stringers and their orientation in the disk are important parameters. And the forging process has a strong impact on the plastic flow and the initial state of the particles. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Other, Other, |