Effect of foreign object damage on fatigue performance of Inconel 718 welded joints
Peng Jia, Chen Han, Qun Li, Zhiping Wang · 2025
Read Effect of foreign object damage on fatigue performance of Inconel 718 welded joints by Peng Jia, Chen Han, Qun Li, Zhiping Wang (2025) in the Tower of Babel, a free online library of public-domain works preserved in clean, searchable text. No sign-up. The full text is served as a plain-text file at a predictable URL, where text is present: https://antarctic-labs.com/tower-of-babel/pmc-12717182.txt.
Description
Peng Jia, Chen Han, Qun Li, and Zhiping Wang studied how impact dents from foreign objects wear down a nickel superalloy used in jet engines, in a 2025 paper. They struck both base metal and welded joints of Inconel 718 with a pendulum rig at varied energies, then tracked damage shape, structure, and fatigue life.
Fresh welded joints start harder and longer-lived than base metal, thanks to finer grains and boundary particles. Impact dents took a V shape and grew with energy, but stayed smaller in welds at the same energy. Under low-energy hits, welds kept their fatigue edge. Under high-energy hits, voids and cracks bloomed inside the welds and their fatigue life crashed below the base metal's. Base metal damage began mainly as cracks at carbide edges.
Catalog record
| CREATOR | Peng Jia, Chen Han, Qun Li, Zhiping Wang |
|---|---|
| YEAR | 2025 |
| COLLECTION | PAPERS |
| FORMAT | TXT |
| FILE SIZE | 30 KB |
| VERSION | 1.0 |
| LICENSE | CC BY 4.0 |
| RIGHTS | CC BY |
| SOURCE | Europe PMC |