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Quantitative chemical-structure evaluation using atom probe tomography: Short-range order analysis of Fe-Al.

Version 2 2024-06-03, 21:02
Version 1 2015-06-15, 09:32
journal contribution
posted on 2024-06-03, 21:02 authored by Ross MarceauRoss Marceau, AV Ceguerra, AJ Breen, D Raabe, SP Ringer
Short-range-order (SRO) has been quantitatively evaluated in an Fe-18Al (at%) alloy using atom probe tomography (APT) data and by calculation of the generalised multicomponent short-range order (GM-SRO) parameters, which have been determined by shell-based analysis of the three-dimensional atomic positions. The accuracy of this method with respect to limited detector efficiency and spatial resolution is tested against simulated D03 ordered data. Whilst there is minimal adverse effect from limited atom probe instrument detector efficiency, the combination of this with imperfect spatial resolution has the effect of making the data appear more randomised. The value of lattice rectification of the experimental APT data prior to GM-SRO analysis is demonstrated through improved information sensitivity.

History

Journal

Ultramicroscopy

Volume

157

Pagination

12-20

Location

Amsterdam, The Netherlands

eISSN

1879-2723

Language

eng

Publication classification

C Journal article, C1 Refereed article in a scholarly journal

Copyright notice

2015, Elsevier

Publisher

Elsevier