Processing of Al-W Gradient Density Materials for Dynamic Ramp Compression Experiments

Gradient density materials are valuable for engineering custom pressure drives in dynamic compression experiments, which are essential for investigating material behavior under extreme conditions, such as in inertial confinement fusion. Aluminum (Al) and tungsten (W) are ideal candidates for these materials due to their large density contrast; however, their significantly different melting points present considerable fabrication challenges. This work presents a method for producing porosity-free Al-W gradient density materials, achieving a fourfold increase in density, which are then used in dynamic compression experiments to demonstrate the ability to create controlled shock ramp compressions. These materials offer the potential for tailored pressure drives, opening new avenues for studying materials in extreme environments and advancing our understanding of material properties.