Ordering and site occupancy of D03 ordered Fe3Al-5 at%Cr evaluated by means of atom probe tomography

Handle URI:
http://hdl.handle.net/10754/561770
Title:
Ordering and site occupancy of D03 ordered Fe3Al-5 at%Cr evaluated by means of atom probe tomography
Authors:
Rademacher, Thomas W.; Al-Kassab, Talaat; Deges, Johannes; Kirchheim, Reiner
Abstract:
Addition 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.
KAUST Department:
Materials Science and Engineering Program
Publisher:
Elsevier
Journal:
Ultramicroscopy
Issue Date:
May-2011
DOI:
10.1016/j.ultramic.2010.12.009
Type:
Article
ISSN:
03043991
Sponsors:
This project was friendly supported by the DFG - Deutsche Forschungs Gemeinschaft - under contract number DFG-Az.: AL 592/3-1.
Appears in Collections:
Articles; Materials Science and Engineering Program

Full metadata record

DC FieldValue Language
dc.contributor.authorRademacher, Thomas W.en
dc.contributor.authorAl-Kassab, Talaaten
dc.contributor.authorDeges, Johannesen
dc.contributor.authorKirchheim, Reineren
dc.date.accessioned2015-08-03T09:04:13Zen
dc.date.available2015-08-03T09:04:13Zen
dc.date.issued2011-05en
dc.identifier.issn03043991en
dc.identifier.doi10.1016/j.ultramic.2010.12.009en
dc.identifier.urihttp://hdl.handle.net/10754/561770en
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.en
dc.description.sponsorshipThis project was friendly supported by the DFG - Deutsche Forschungs Gemeinschaft - under contract number DFG-Az.: AL 592/3-1.en
dc.publisherElsevieren
dc.subjectAtom probe tomographyen
dc.subjectEmbedded atom methoden
dc.subjectFe-Al-Cren
dc.subjectOrderingen
dc.subjectSimulationen
dc.subjectSite occupancyen
dc.titleOrdering and site occupancy of D03 ordered Fe3Al-5 at%Cr evaluated by means of atom probe tomographyen
dc.typeArticleen
dc.contributor.departmentMaterials Science and Engineering Programen
dc.identifier.journalUltramicroscopyen
dc.contributor.institutionInstitut für Materialphysik, Universität Göttingen, Friedrich-Hund-Platz 1, 37077 Gottingen, Germanyen
dc.contributor.institutionMPI für Eisenforschung GmbH, Max-Planck-Straße 1, 40237 Dusseldorf, Germanyen
kaust.authorAl-Kassab, Talaaten
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