Title
On the interpretation of HREM images of partially ordered alloysOn the interpretation of HREM images of partially ordered alloys
Author
Faculty/Department
Faculty of Sciences. Physics
Research group
Electron microscopy for materials research (EMAT)
Vision lab
Publication type
article
Publication
Amsterdam,
Source (journal)
Ultramicroscopy. - Amsterdam
Volume/pages
60(1995):2, p. 265-282
ISSN
0304-3991
ISI
A1995TZ14700008
Carrier
E
Target language
English (eng)
Full text (Publishers DOI)
Affiliation
University of Antwerp
Abstract
The ordering for 11/20 alloys has been studied by high-resolution electron microscopy (HREM). The distribution of the intensity maxima in the HREM image have been statistically examined, which provides a profound basis for the image interpretation. Processing of the HREM images allows ''dark-field'' images to be obtained, exhibiting a two-dimensional distribution of those columns which contain the most information in order to interpret the short-range order correlations. Pair correlations and higher cluster correlations between projected columns can be visualised, providing unique information about the ordering as retrieved from an experimental result without any other assumption. The method has been applied to Au4Cr and to Au4Mn to interpret the quenched short-range order state and the transition to long-range order.
E-info
https://repository.uantwerpen.be/docman/iruaauth/3d586e/2814787.pdf
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