| About this Abstract |
| Meeting |
2021 TMS Annual Meeting & Exhibition
|
| Symposium
|
Advanced Real Time Imaging
|
| Presentation Title |
High-velocity Microparticle Impact Modes for Mismatched Metals |
| Author(s) |
David Veysset, Mostafa Hassani, Yuchen Sun, Keith A. Nelson, Christopher A. Schuh |
| On-Site Speaker (Planned) |
David Veysset |
| Abstract Scope |
Using an all-optical micro-ballistic platform, we study the high-velocity microparticle impact behavior of metals for different combinations of particle and substrate. Under specific impact conditions, metallic particles can bond, instead of rebound, to metallic substrates upon impacting at velocities beyond a material- and process-dependent threshold velocity. Through real-time observations, we image particle deformation upon impact and measure threshold adhesion velocities for nine particle/substrate pairs. Supported by post-mortem examinations, we identify three impact modes of behavior: splatting (extreme flattening of the particle), co-deformation (similar plastic strain in particle and substrate), and penetration (particle embedment in substrate). We develop an analytical framework to predict the operative impact regime for a given particle/substrate combination and propose an impact ratio indicator based on material properties. The impact ratio aims to predict the impact modes and is validated with the nine material pairs presented in this study and six other pairs taken from the literature. |
| Proceedings Inclusion? |
Planned: |