Journal
ULTRAMICROSCOPY
Volume 132, Issue -, Pages 271-278Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.ultramic.2012.12.011
Keywords
Atom probe; Clustering; Maximum separation; ODS
Categories
Funding
- Royal Society
- EPSRC DTA studentship
- Royal Society Dorothy Hodgkin Fellowship
- EPSRC [EP/H018921/1] Funding Source: UKRI
- Engineering and Physical Sciences Research Council [EP/H018921/1] Funding Source: researchfish
Ask authors/readers for more resources
Oxide nanoclusters in a consolidated Fe-14Cr-2W-0.3Ti-0.3Y(2)O(3) ODS steel and in the alloy powder after mechanical alloying (but before consolidation) are investigated by atom probe tomography (APT). The maximum separation method is a standard method to define and characterise clusters from within APT data, but this work shows that the extent of clustering between the two materials is sufficiently different that the nanoclusters in the mechanically alloyed powder and in the consolidated material cannot be compared directly using the same cluster selection parameters. As the cluster selection parameters influence the size and composition of the clusters significantly, a procedure to optimise the input parameters for the maximum separation method is proposed by sweeping the d(max) and N-min parameter space. By applying this method of cluster parameter selection combined with a 'matrix correction' to account for trajectory aberrations, differences in the oxide nanoclusters can then be reliably quantified. (C) 2012 Elsevier B.V. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available