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

• 来源期刊: 中国物理快报（英文版）
• 年，卷（期）: 2013,（6）
• 页码范围: 165-168
• 页数: 4页
• 语种: 英文
• DOI: 10.1088/0256-307X/30/6/066401

摘要

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 Us and particle velocity up can be described linearly by Us =4.324(±0.035) + 1.177(±0.012)up.No obvious evidence of phase transition is found in the shock compression pressure range.The calculated Us-up relationship obtained from the additive principle is different from the experimental data,indicating that the α-→ β phase transition occurs below 28 GPa.The Grüneisen parameter γobtained from the experimental data can be expressed by γ =1.277(ρo/ρ).The zero-pressure bulk modulus B0s =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.