| About this Abstract |
| Meeting |
2024 TMS Annual Meeting & Exhibition
|
| Symposium
|
Dynamic Behavior of Materials X
|
| Presentation Title |
Effects of Controlled Porosity on Shock Mitigation in Additively Manufactured 316L Stainless Steel |
| Author(s) |
Taylor Sloop, Elias Winterscheidt, Kevin Lamb, Sudarsanam Sheikh, Josh Kacher, Naresh Thadhani |
| On-Site Speaker (Planned) |
Taylor Sloop |
| Abstract Scope |
High strain rate impact testing of additively manufactured stainless steel samples, with controlled pore size and geometrical distribution, was performed. The goal of this research is to determine the effects of discontinuities on the global shock wave propagation and correlate the same to local spall failure at individual pore scale. Velocity profiles were measured using photon doppler velocimetry. The mechanisms related to void nucleation and coalescence with reference to pore locations were analyzed. It was observed that the location and size of the pores affects shock wave propagation, up to and including spall mitigation, with less damage present near the pre-existing pores. Spall failure is observed at a distance from 500 µm pore but at 200 µm pore is fully compacted, with changes in the microstructure near the 500 µm pores. The compounding effects of multiple pores in the impact direction and spall plane were also investigated. |
| Proceedings Inclusion? |
Planned: |
| Keywords |
Additive Manufacturing, Characterization, Other |