Shock Compression of the New 47Zr45Ti5Al3V Alloys up to 200 GPa

Shock compression experiments on a new kind of 47Zr45Ti5Al3V alloys at pressures between 28 and 200 GPa are performed using a two-stage light gas gun. The Hugoniot data are obtained by combining the impedance-match method and the electrical probe technique. The relationship between the shock wave velocity U-s and particle velocity.. p can be described linearly by U-s = 4.324(+/- 0.035) + 1.177(+/- 0.012)U-p. No obvious evidence of phase transition is found in the shock compression pressure range. The calculated U-s - u(p) relationship obtained from the additive principle is different from the experimental data, indicating that the alpha -> beta phase transition occurs below 28 GPa. The Gruneisen parameter gamma obtained from the experimental data can be expressed by gamma = 1.277(rho(0)/rho). The zero-pressure bulk modulus B-0s = 97.96 GPa and its pressure derivative B-0s = 3.68. The P-V-T equation of state for 47Zr45Ti5Al3V is given using the Vinet equation of state to describe the cold curve and the Debye model for the thermal contributions.