As-machined, shot peened, oxidized, and shot peened-oxidized IN718 additively manufactured samples were fatigue tested at elevated temperature. Shot peening increases fatigue life by 6. Fractographic analyses reveal that cracks mostly initiate on lack of fusion. For the as-machined condition, cracks are located at the surface or subsurface within a 120 µm depth […]
As-machined, shot peened, oxidized, and shot peened-oxidized IN718 additively manufactured samples were fatigue tested at elevated temperature. Shot peening increases fatigue life by 6. Fractographic analyses reveal that cracks mostly initiate on lack of fusion. For the as-machined condition, cracks are located at the surface or subsurface within a 120 µm depth range. While for the shot peened samples, cracks are located subsurface at about 850 µm depth. Finally, results show that oxidation does not affect fatigue life even after shot peening.
Session
| Room | Date | Hour | Subject |
|---|---|---|---|
| Poster Session | 00:00-00:00 | Charles Bianchetti 1 - Fatigue performance at 550°C of shot peened Inconel 718 additively manufactured by Laser-Powder Bed Fusion (L-PBF) |
