| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Cold Spray Additive Manufacturing: Part Quality and Performance
|
| Presentation Title |
Investigating the Microstructure and Mechanical Behavior of the Particle-particle and Substrate-particle Interfaces in Cold Sprayed Coatings |
| Author(s) |
Tanvi Ajantiwalay, Sridhar Niverty, Rajib Kalsar, Arun Devaraj, Vineet V. Joshi |
| On-Site Speaker (Planned) |
Tanvi Ajantiwalay |
| Abstract Scope |
During cold spray, powder particles undergo severe plastic deformation upon impact with the substrate. This results in particle flattening, oxide breakage, and metallurgical bond formation at particle-particle and substrate-particle interfaces. At smaller length scales, heterogeneity of the bond coating can create property differences, which are yet to be explored. Thus, a comprehensive understanding of local interfacial bond strength at this heavily deformed interface would assist in designing optimal cold spray processes. In this study, we investigated the microstructure and mechanical properties of Zn cold sprayed on AZ91 magnesium substrates via correlative microscopy and in situ micro-tensile testing. High-resolution microscopy was employed to investigate the metallurgical bond formation and role of surface oxides at the Zn-Zn and Zn-Mg interfaces from samples coated using different parameters. Additionally, micro-tensile dogbones were fabricated using Plasma Focused Ion Beam (PFIB) and tested in situ to study the strength and deformation behavior of the interfaces. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Characterization, Mechanical Properties, Surface Modification and Coatings |