SHOCK COMPRESSION AND UNLOADING RESPONSE OF 1050 ALUMINUM TO 70 GPA

摘要

Using laser-interferometry, shock compression and unloading profiles were measured in 1050 aluminum shocked to approx70 GPa. These results were compared to published data on relatively pure (99.99wt percent ultra pure, 1050, 1060, and 1100) and precipitate - hardened (2024, 6061) aluminum. Within experimental scatter, Hugoniots and longitudinal sound speeds (in the shocked state) of pure and precipitate-hardened aluminum are quite comparable to 70GPa. This agreement demonstrates that impurity content has minimal influence on the longitudinal stress-volume response and acoustic speeds under shock compression.