About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Materials Deposition by Cold Spray and Related Technologies III
|
| Presentation Title |
Quantitative assessment of critical metrics of cold-spray using a peridynamics-based numerical framework incorporating adhesion |
| Author(s) |
Jun Song, Haijun Zhang |
| On-Site Speaker (Planned) |
Jun Song |
| Abstract Scope |
Cold spray (CS) is a promising technology for applications spanning structural repair, advanced coating and additive manufacturing. For CS of metal powders, though successful deposition is generally recognized to depend on rupture of native oxide films to enable intimate metallic contact, the exact mechanism of oxide rupture and its role in particle deposition remain insufficiently understood. Based on the peridynamics method, a new numerical framework was established where adhesion between the particle and substrate is explicitly described through the bond forces. Systematic numerical simulations were then performed to reveal the oxide rupture mechanism and oxide removal process as the material/oxide attributes and spray conditions vary. The role of oxide in contact formation, particle adhesion, and rebounding-bonding competition was quantitatively clarified, and subsequently the critical velocity was predicted. The new framework enables realistic and accurate numerical investigation of particle impact and bonding behaviors for better mechanistic understanding of the CS process. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Modeling and Simulation, Surface Modification and Coatings, Other |