Recent experimental findings from the research team led by Prof. Jianbo Hu at the Institute of Fluid Physics, China Academy of Engineering Physics (CAEP), revealed partial dislocation-mediated plastic flow in shock-loaded single-crystal aluminum. The experiment was conducted at the PF-AR NW14A beamline of the High Energy Accelerator Research Organization (KEK). Utilizing laser ablation to generate shock waves and employing ultra-bright, ultra-short X-ray pulses from synchrotron radiation, the team captured in situ Laue diffraction patterns of single-crystal Al during dynamic loading. This work provides the first experimental evidence of partial-dislocation-dominated plastic flow in shock-compressed single-crystal Al, enabling analysis of the distinct deformation mechanisms between quasi-static and dynamic loading in aluminum—a high stacking fault energy metal. These findings offer new insights into the plastic deformation of aluminum under high strain rates and establish novel theoretical and experimental foundations for multi-scale research on material performance under extreme conditions.Recent experimental findings from the research team led by Prof. Jianbo Hu at the Institute of Fluid Physics, China Academy of Engineering Physics (CAEP), revealed partial dislocation-mediated plastic flow in shock-loaded single-crystal aluminum. The experiment was conducted at the PF-AR NW14A beamline of the High Energy Accelerator Research Organization (KEK). Utilizing laser ablation to generate shock waves and employing ultra-bright, ultra-short X-ray pulses from synchrotron radiation, the team captured in situ Laue diffraction patterns of single-crystal Al during dynamic loading. This work provides the first experimental evidence of partial-dislocation-dominated plastic flow in shock-compressed single-crystal Al, enabling analysis of the distinct deformation mechanisms between quasi-static and dynamic loading in aluminum—a high stacking fault energy metal. These findings offer new insights into the plastic deformation of aluminum under high strain rates and establish novel theoretical and experimental foundations for multi-scale research on material performance under extreme conditions.
