About this Abstract |
| Meeting |
2026 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advances in Materials Deposition by Cold Spray and Related Technologies III
|
| Presentation Title |
Crystal Structure–Driven Plastic Deformation in Ceramics During Cold Spray Processing |
| Author(s) |
Arvind Agarwal, Ambreen Nisar, Denny John, Anil Lama, Sohail M.A.K. Mohammed, Tanaji Paul, Tyler Dolmetsch |
| On-Site Speaker (Planned) |
Arvind Agarwal |
| Abstract Scope |
Understanding the deposition mechanism of brittle ceramics during cold spray (CS) processing is critical to extending this solid-state technique beyond ductile metals. This study explores plastic deformation–driven ceramic deposition by examining the synergistic roles of particle size distribution (PSD), crystal structure, and high-strain-rate impact. Three ceramics with distinct crystal structures—Al₂O₃ (hexagonal), BaTiO₃ (tetragonal), and TaC (cubic)—are investigated to assess how active slip systems influence deformation under CS conditions. All three ceramics were successfully deposited onto Al6061 substrates. Cross-sectional analyses indicate a deposition mechanism initiated by the anchoring of larger ceramic particles into the softer substrate, followed by densification through finer sub-micron particles. High-resolution TEM and Atomic force microscopy (AFM) reveal nanoscale grain refinement, recrystallization, and dislocation networks, indicating plastic deformation in brittle ceramics. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Ceramics, Characterization, Powder Materials |