About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
|
Dynamic Behavior of Materials IX
|
Presentation Title |
In Situ X-ray Diffraction of Shock Driven Sn Microjets |
Author(s) |
David Bober, Jonathan Lind, Alison M Saunders, Minta C Akin, Fady Najjar |
On-Site Speaker (Planned) |
David Bober |
Abstract Scope |
Synchrotron x-ray diffraction was used to identify the minimum pressure at which shock driven Sn microjets completely melt. This pressure was below the Hugoniot state from which a planar surface would melt upon the release of a normal shock. The difference in these states is a measure of the dissipation produced by the jetting process and is a useful benchmark for plasticity models. Regarding the solid jet material, the diffraction signal revealed extensive grain refinement had occurred; complete Debye-Scherrer rings were observed from an interaction volume that was smaller than the average initial grain volume. These results provide a new level of experimental constraint on the material state within Sn microjets. The jets were produced via parallel plate impact loading of polished Sn samples, each of which was cut with a single V-groove.
Work performed under the auspices of the U.S. DOE by LLNL under contract DE-AC52-07NA27344. LLNL-ABS-823936 |
Proceedings Inclusion? |
Planned: |
Keywords |
Mechanical Properties, Characterization, Other |