부산대학교 도서관

Cutting edge shock compression research is moving towards ever increasing pressure or stress states into the Multi-Mbar range. The simple empirical material model approximations of the past are not adequate at these new pressure extremes. We extend the principal shock Hugoniot for Ti64 to more than threefold compression, up to over 1.2 TPa with high-fidelity experimental shock compression data measured on Sandia's Z machine. A highly reliable multiphase Equation of State (EOS) for Ti64 is developed, spanning a broad range of temperature and pressures. Results demonstrate that the Hugoniot of the Ti64 alloy is stiffer than that of pure Ti and reveal that Ti64 melts on the Hugoniot at a significantly lower pressure and temperature than previously modelled.