EXAFS Measurement of Iron bcc-to-hcp Phase Transformation in Nanosecond-Laser Shocks
Authors:
- 9 August 2005
- journal article
- research article
- Published by American Physical Society (APS) in Physical Review Letters
- Vol. 95 (7) , 075501
Abstract
Extended x-ray absorption fine structure (EXAFS) measurements have demonstrated the phase transformation from body-centered-cubic (bcc) to hexagonal-close-packed (hcp) iron due to nanosecond, laser-generated shocks. The EXAFS spectra are also used to determine the compression and temperature in the shocked iron, which are consistent with hydrodynamic simulations and with the compression inferred from velocity interferometry. This is a direct, atomic-level, and in situ proof of shock-induced transformation in iron, as opposed to the previous indirect proof based on shock-wave splitting.Keywords
This publication has 22 references indexed in Scilit:
- Direct Observation of theTransition in Shock-Compressed Iron via Nanosecond X-Ray DiffractionPhysical Review Letters, 2005
- Materials science under extreme conditions of pressure and strain rateMetallurgical and Materials Transactions A, 2004
- Extended x-ray absorption fine structure measurements of laser shocks in Ti and V and phase transformation in TiPhysics of Plasmas, 2004
- Extended X-Ray Absorption Fine Structure Measurements of Laser-Shocked V and Ti and Crystal Phase Transformation in TiPhysical Review Letters, 2004
- Femtosecond laser quenching of the ε phase of ironApplied Physics Letters, 2003
- Iron bcc-hcp transition: Local structure from x-ray-absorption fine structurePhysical Review B, 1998
- Metastability and dynamics of the shock-induced phase transition in ironPhysical Review B, 1997
- Shock wave study of the α ⇄ ε phase transition in ironJournal of Applied Physics, 1974
- X-Ray Diffraction Studies in the 100 Kilobar Pressure RangeJournal of Applied Physics, 1962
- Polymorphism of Iron at High PressureJournal of Applied Physics, 1956