| About this Abstract |
| Meeting |
2023 TMS Annual Meeting & Exhibition
|
| Symposium
|
Additive Manufacturing: Length-Scale Phenomena in Mechanical Response
|
| Presentation Title |
Utilizing Profilometry-based Indentation Plastometry, Nanomechanical Property Mapping and Flat-punch Nanoindentation to Unveil Dynamic Recrystallization-to-Plasticity Relations in Cold Spray Additive Manufacturing |
| Author(s) |
Bryer Sousa, Danielle L. Cote |
| On-Site Speaker (Planned) |
Bryer Sousa |
| Abstract Scope |
The formation of heterogeneous strain gradients throughout consolidated metallurgical cold spray microstructures stems from high-strain rate impact-induced severe plastic deformation mechanisms. Consequently, the particle-particle bonding underpinning solid-state cold spray processing is accompanied by interfacial dynamic recrystallization under a wide range of applied impact stresses, point-of-impact strain rates, and particle impact velocity regimes. However, the degree of dynamic recrystallization achieved along said interfacial zones have yet to be entirely or mechanistically connected to the plasticity characteristics of consolidations as a function of processing parameters. This work considers gas-atomized metallic feedstock in conjunction with variable processing parameter sets (carrier gas pressure and temperature modulation) to obtain metallurgical consolidations with differing degrees of interfacial dynamically recrystallized zones. Using profilometry-based indentation plastometry, flat-punch nanoindentation, and nanomechanical property mapping, linkages between the degree of recrystallization and plasticity will be unveiled through multi-scale indentation mechanics and guide enhanced processing-structure-properties-performance relations for cold spray additive manufacturing. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Mechanical Properties, Powder Materials |