| About this Abstract |
| Meeting |
MS&T24: Materials Science & Technology
|
| Symposium
|
Advanced Characterization of Materials for Nuclear, Radiation, and Extreme Environments V
|
| Presentation Title |
Characterization of Aluminum Under Shock: Defects, Grain Orientation, and Phase Stability |
| Author(s) |
Benjamin Helman, Adib Samin |
| On-Site Speaker (Planned) |
Benjamin Helman |
| Abstract Scope |
Molecular dynamics (MD) simulations are employed to investigate the dynamic response of pure aluminum crystals under shock loading conditions using the Multi-Scale Shock Technique (MSST). The effects of radiation damage on the shock response are characterized through the examination of changes to the shock Hugoniot and the melting temperature following the introduction of varying concentrations of vacancies and interstitial dislocation loop densities to simulate different doses. In addition, aluminum bicrystals are studied to characterize the impact of grain boundary type and misorientation angle on the propagation of shock waves through the utilization of the non-equilibrium piston method. Finally, the phase stability and melt curve of aluminum are investigated for extreme temperature and pressure ranges by performing free energy calculations and solid-liquid coexistence simulations. |