Ultrafast X-ray Diffraction Study of a ...
Type de document :
Article dans une revue scientifique: Article original
DOI :
URL permanente :
Titre :
Ultrafast X-ray Diffraction Study of a Shock-Compressed Iron Meteorite above 100 GPa
Auteur(s) :
Tecklenburg, Sabrina [Auteur]
Colina-Ruiz, Roberto [Auteur]
Hok, Sovanndara [Auteur]
Bolme, Cynthia [Auteur]
Galtier, Eric [Auteur]
Granados, Eduardo [Auteur]
Hashim, Akel [Auteur]
Lee, Hae Ja [Auteur]
Merkel, Sébastien [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Morrow, Benjamin [Auteur]
Nagler, Bob [Auteur]
Ramos, Kyle [Auteur]
Rittman, Dylan [Auteur]
Walroth, Richard [Auteur]
Mao, Wendy L. [Auteur]
Gleason, Arianna E. [Auteur]
Colina-Ruiz, Roberto [Auteur]
Hok, Sovanndara [Auteur]
Bolme, Cynthia [Auteur]
Galtier, Eric [Auteur]
Granados, Eduardo [Auteur]
Hashim, Akel [Auteur]
Lee, Hae Ja [Auteur]
Merkel, Sébastien [Auteur]
Unité Matériaux et Transformations - UMR 8207 [UMET]
Morrow, Benjamin [Auteur]
Nagler, Bob [Auteur]
Ramos, Kyle [Auteur]
Rittman, Dylan [Auteur]
Walroth, Richard [Auteur]
Mao, Wendy L. [Auteur]
Gleason, Arianna E. [Auteur]
Titre de la revue :
Minerals
Nom court de la revue :
Minerals
Numéro :
11
Pagination :
567
Éditeur :
MDPI AG
Date de publication :
2021-05-26
ISSN :
2075-163X
Résumé en anglais : [en]
Natural kamacite samples (Fe92.5Ni7.5) from a fragment of the Gibeon meteorite were studied as a proxy material for terrestrial cores to examine phase transition kinetics under shock compression for a range of different ...
Lire la suite >Natural kamacite samples (Fe92.5Ni7.5) from a fragment of the Gibeon meteorite were studied as a proxy material for terrestrial cores to examine phase transition kinetics under shock compression for a range of different pressures up to 140 GPa. In situ time-resolved X-ray diffraction (XRD) data were collected of a body-centered cubic (bcc) kamacite section that transforms to the high-pressure hexagonal close-packed (hcp) phase with sub-nanosecond temporal resolution. The coarse-grained crystal of kamacite rapidly transformed to highly oriented crystallites of the hcp phase at maximum compression. The hcp phase persisted for as long as 9.5 ns following shock release. Comparing the c/a ratio with previous static and dynamic work on Fe and Fe-rich Fe-Ni alloys, it was found that some shots exhibit a larger than ideal c/a ratio, up to nearly 1.65. This work represents the first time-resolved laser shock compression structural study of a natural iron meteorite, relevant for understanding the dynamic material properties of metallic planetary bodies during impact events and Earth’s core elasticity.Lire moins >
Lire la suite >Natural kamacite samples (Fe92.5Ni7.5) from a fragment of the Gibeon meteorite were studied as a proxy material for terrestrial cores to examine phase transition kinetics under shock compression for a range of different pressures up to 140 GPa. In situ time-resolved X-ray diffraction (XRD) data were collected of a body-centered cubic (bcc) kamacite section that transforms to the high-pressure hexagonal close-packed (hcp) phase with sub-nanosecond temporal resolution. The coarse-grained crystal of kamacite rapidly transformed to highly oriented crystallites of the hcp phase at maximum compression. The hcp phase persisted for as long as 9.5 ns following shock release. Comparing the c/a ratio with previous static and dynamic work on Fe and Fe-rich Fe-Ni alloys, it was found that some shots exhibit a larger than ideal c/a ratio, up to nearly 1.65. This work represents the first time-resolved laser shock compression structural study of a natural iron meteorite, relevant for understanding the dynamic material properties of metallic planetary bodies during impact events and Earth’s core elasticity.Lire moins >
Langue :
Anglais
Comité de lecture :
Oui
Audience :
Non spécifiée
Établissement(s) :
Université de Lille
CNRS
INRA
ENSCL
CNRS
INRA
ENSCL
Collections :
Équipe(s) de recherche :
Matériaux Terrestres et Planétaires
Date de dépôt :
2021-05-27T09:15:28Z
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