English
 
Privacy Policy Disclaimer
  Advanced SearchBrowse

Item

ITEM ACTIONSEXPORT
Add to Basket
  Local TagsRelease HistoryDetailsSummary

Released
Journal Article

Observation of Fundamental Mechanisms in Compression-Induced Phase Transformations Using Ultrafast X-ray Diffraction

Authors

Armstrong,  Michael R.
External Organizations;

Radousky,  Harry B.
External Organizations;

Austin,  Ryan A.
External Organizations;

Stavrou,  Elissaios
External Organizations;

Zong,  Hongxiang
External Organizations;

Ackland,  Graeme J.
External Organizations;

Brown,  Shaughnessy
External Organizations;

Crowhurst,  Jonathan C.
External Organizations;

Gleason,  Arianna E.
External Organizations;

Granados,  Eduardo
External Organizations;

Grivickas,  Paulius
External Organizations;

Holtgrewe,  Nicholas
External Organizations;

Lee,  Hae Ja
External Organizations;

Li,  Tian T.
External Organizations;

/persons/resource/slobanov

Lobanov,  S. S.
0 Pre-GFZ, Departments, GFZ Publication Database, Deutsches GeoForschungsZentrum;

McKeown,  Joseph T.
External Organizations;

Nagler,  Bob
External Organizations;

Nam,  Inhyuk
External Organizations;

Nelson,  Art J.
External Organizations;

Prakapenka,  Vitali
External Organizations;

Prescher,  Clemens
External Organizations;

Roehling,  John D.
External Organizations;

Teslich,  Nick E.
External Organizations;

Walter,  Peter
External Organizations;

Goncharov,  Alexander F.
External Organizations;

Belof,  Jonathan L.
External Organizations;

External Ressource
No external resources are shared
Fulltext (public)
There are no public fulltexts stored in GFZpublic
Supplementary Material (public)
There is no public supplementary material available
Citation

Armstrong, M. R., Radousky, H. B., Austin, R. A., Stavrou, E., Zong, H., Ackland, G. J., Brown, S., Crowhurst, J. C., Gleason, A. E., Granados, E., Grivickas, P., Holtgrewe, N., Lee, H. J., Li, T. T., Lobanov, S. S., McKeown, J. T., Nagler, B., Nam, I., Nelson, A. J., Prakapenka, V., Prescher, C., Roehling, J. D., Teslich, N. E., Walter, P., Goncharov, A. F., Belof, J. L. (2021): Observation of Fundamental Mechanisms in Compression-Induced Phase Transformations Using Ultrafast X-ray Diffraction. - JOM, 73, 2185-2193.
https://doi.org/10.1007/s11837-020-04535-4


Cite as: https://gfzpublic.gfz-potsdam.de/pubman/item/item_5005410
Abstract
As theoretically hypothesized for several decades in group IV transition metals, we have discovered a dynamically stabilized body-centered cubic (bcc) intermediate state in Zr under uniaxial loading at sub-nanosecond timescales. Under ultrafast shock wave compression, rather than the transformation from a-Zr to the more disordered hex-3 equilibrium x-Zr phase, in its place we find the formation of a previously unobserved nonequilibrium bcc metastable in- termediate. We probe the compression-induced phase transition pathway in zirconium using time-resolved sub-picosecond x-ray diffraction analysis at the Linac Coherent Light Source. We also present molecular dynamics simula- tions using a potential derived from first-principles methods which indepen- dently predict this intermediate phase under ultrafast shock conditions. In contrast with experiments on longer timescale (> 10 ns) where the phase diagram alone is an adequate predictor of the crystalline structure of a material, our recent study highlights the importance of metastability and time dependence in the kinetics of phase transformations.