Acoustic velocities and phase transitions in molybdenum under strong shock compression
Abstract
We present acoustic velocity data that demonstrate high-pressure solid-solid phase transition in molybdenum at about 2.1 Mbar and 4100 K. This observation is supported here by first-principles theoretical calculations which predict a zero-temperature bcc-->hcp transition within our experimental pressure range. In addition, our results show the melting transition for shock-compressed Mo at about 3.9 Mbar and 10 000 K.
- Publication:
-
Physical Review Letters
- Pub Date:
- February 1989
- DOI:
- 10.1103/PhysRevLett.62.637
- Bibcode:
- 1989PhRvL..62..637H
- Keywords:
-
- Acoustic Velocity;
- Compression Loads;
- Molybdenum;
- Phase Transformations;
- Shock Loads;
- Atomic Structure;
- Body Centered Cubic Lattices;
- Close Packed Lattices;
- Hexagonal Cells;
- Shock Waves;
- Thermodynamics and Statistical Physics;
- 64.30.+t;
- 62.50.+p;
- Equations of state of specific substances;
- High-pressure and shock wave effects in solids and liquids