Three-Dimensional Imaging of Phase Ordering in an Fe-Al Alloy by Bragg Ptychography - Aix-Marseille Université Access content directly
Journal Articles Physical Review Letters Year : 2018

Three-Dimensional Imaging of Phase Ordering in an Fe-Al Alloy by Bragg Ptychography

Chan Kim
  • Function : Author
Thomas Roth
  • Function : Author
Wei Lu
  • Function : Author
  • PersonId : 758358
  • IdRef : 146229215
Steven Leake
Anders Madsen
  • Function : Author

Abstract

We show three-dimensional images of phase ordering in a Fe 55 Al 45 alloy obtained by coherent x-ray diffraction Bragg ptychography. Fe-Al alloys display ordered phases where the atoms organize on sublattices resulting in the emergence of otherwise forbidden superlattice reflections. The degeneracy of the ordering results in antiphase domain boundaries that, in addition to the general lattice strain, provide phase shifts of the diffracted beam depending on the reflection. The reconstructed phase images can be separated into components originating from B2 phase domains and lattice strain by performing Bragg ptychography on both the (002) fundamental and the (001) superlattice reflections.
Fichier principal
Vignette du fichier
PhysRevLett.121.256101.pdf (1.55 Mo) Télécharger le fichier
Origin Publisher files allowed on an open archive
Loading...

Dates and versions

hal-01975963 , version 1 (09-01-2019)

Licence

Identifiers

Cite

Chan Kim, Virginie Chamard, Jörg Hallmann, Thomas Roth, Wei Lu, et al.. Three-Dimensional Imaging of Phase Ordering in an Fe-Al Alloy by Bragg Ptychography. Physical Review Letters, 2018, 121 (25), pp.256101. ⟨10.1103/physrevlett.121.256101⟩. ⟨hal-01975963⟩
146 View
290 Download

Altmetric

Share

Gmail Mastodon Facebook X LinkedIn More