About this Abstract |
Meeting |
2022 TMS Annual Meeting & Exhibition
|
Symposium
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Dynamic Behavior of Materials IX
|
Presentation Title |
Prospects and Challenges in Understanding the Strength of Materials in Extremes |
Author(s) |
Marc A. Meyers, Gaia Righi, Hye Sook Park, Bruce Remington, Chris Wehrenberg, Carlos Ruestes, Eduardo Bringa |
On-Site Speaker (Planned) |
Marc A. Meyers |
Abstract Scope |
Coordinated laser compression and release experiments in combination with molecular dynamics simulations are paving the way for an enhanced understanding of the strength of materials under compression and tension in a regime of strain rates above 106 s-1. Experiments have been conducted at four major facilities: the LLNL National Ignition Facility, the LLNL Janus laser, the Omega facility within the Laboratory for Laser Energetics, and the Dynamic Compression Sector at the Advanced Photon Source of Argonne National Laboratory. Characterization of recovered specimens in combination with VISAR have been instrumental in determining the tensile strength and mechanisms of failure of iron in spalling. For covalent materials, the effect of the powerful shear stresses in combination with pressure have resulted in the production of nanoscale amorphous layers which act as efficient paths for plastic deformation. The results and their significance are discussed. Research support: CMEC (DOE NNSA DE-NA0003842); LLNL ACT-UP(subcontract B639114). |
Proceedings Inclusion? |
Planned: |
Keywords |
Characterization, Mechanical Properties, |