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dc.contributor.authorRademacher, Thomas W.
dc.contributor.authorAl-Kassab, Talaat
dc.contributor.authorDeges, Johannes
dc.contributor.authorKirchheim, Reiner
dc.date.accessioned2015-08-03T09:04:13Z
dc.date.available2015-08-03T09:04:13Z
dc.date.issued2011-05
dc.identifier.issn03043991
dc.identifier.doi10.1016/j.ultramic.2010.12.009
dc.identifier.urihttp://hdl.handle.net/10754/561770
dc.description.abstractAddition of ternary elements to the D03 ordered Fe3Al intermetallic phase is a general approach to optimise its mechanical properties. To understand the physical influences of such additions the determination of the probability of site occupancies of these additions on the lattice site and ordering parameters is of high interest. Some common experimental techniques such as X-ray diffraction or Atom Location by Channelling Enhanced Microanalysis (ALCHEMI) are usually applied to explore this interplay. Unfortunately, certain published results are partly inconsistent, imprecise or even contradictory. In this study, these aspects are evaluated systematically by atom probe tomography (APT) and a special data analysis method. Additionally, to account for possible field evaporation effects that can falsify the estimation of site occupancy and induce misinterpretations, APT evaporation sequences were also simulated. As a result, chromium occupies most frequently the next nearest neighbour sites of Al atoms and local ordering parameters could be achieved. © 2010 Elsevier B.V.
dc.description.sponsorshipThis project was friendly supported by the DFG - Deutsche Forschungs Gemeinschaft - under contract number DFG-Az.: AL 592/3-1.
dc.publisherElsevier BV
dc.subjectAtom probe tomography
dc.subjectEmbedded atom method
dc.subjectFe-Al-Cr
dc.subjectOrdering
dc.subjectSimulation
dc.subjectSite occupancy
dc.titleOrdering and site occupancy of D03 ordered Fe3Al-5 at%Cr evaluated by means of atom probe tomography
dc.typeArticle
dc.contributor.departmentMaterials Science and Engineering Program
dc.identifier.journalUltramicroscopy
dc.contributor.institutionInstitut für Materialphysik, Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Gottingen, Germany
dc.contributor.institutionMPI für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Dusseldorf, Germany
kaust.personAl-Kassab, Talaat


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