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dc.contributor.authorOwen, Lewisen
dc.contributor.authorPickering, EJen
dc.contributor.authorPlayford, HYen
dc.contributor.authorStone, Howarden
dc.contributor.authorTucker, MGen
dc.contributor.authorJones, Nicken
dc.date.accessioned2016-11-10T13:22:36Z
dc.date.available2016-11-10T13:22:36Z
dc.date.issued2016-09-28en
dc.identifier.issn1359-6454
dc.identifier.urihttps://www.repository.cam.ac.uk/handle/1810/261123
dc.description.abstractThe formation of single phase solid solutions from combinations of multiple principal elements, with differing atomic radii, has led to the suggestion that the lattices of high-entropy alloys (HEAs) must be severely distorted. To assess this hypothesis, total scattering measurements using neutron radiation have been performed on the CrMnFeCoNi alloy and compared with similar data from five compositionally simpler materials within the same system. The Bragg diffraction patterns from all of the studied materials were similar, consistent with a face-centered cubic structure, and none showed the pronounced dampening that would be expected from a highly distorted lattice. A more detailed evaluation of the local lattice strain was made by considering the first six coordination shells in the pair distribution functions (PDF), obtained from the total scattering data. Across this range, the HEA exhibited the broadest PDF peaks but these widths were not disproportionately larger than those of the simpler alloys. In addition, of all the materials considered, the HEA was at the highest homologous temperature, and hence the thermal vibrations of the atoms would be greatest. Consequently, the level of local lattice strain required to rationalise a given PDF peak width would be reduced. As a result, the data presented in this study do not indicate that the local lattice strain in the equiatomic CrMnFeCoNi HEA is anomalously large.
dc.description.sponsorshipThe authors would like to thank the EPSRC/Rolls-Royce Strategic Partnership for funding (EP/M005607/1 and EP/H022309).
dc.languageEnglishen
dc.language.isoenen
dc.publisherElsevier
dc.rightsAttribution 4.0 International*
dc.rightsAttribution 4.0 Internationalen
dc.rightsAttribution 4.0 Internationalen
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/en
dc.subjecthigh-entropy alloysen
dc.subjectneutron diffractionen
dc.subjectlattice strainsen
dc.subjectpair correlation functionen
dc.titleAn assessment of the lattice strain in the CrMnFeCoNi high-entropy alloyen
dc.typeArticle
dc.description.versionThis is the final version of the article. It first appeared from Elsevier via https://doi.org/10.1016/j.actamat.2016.09.032en
prism.endingPage18
prism.publicationDate2016en
prism.publicationNameActa Materialiaen
prism.startingPage11
prism.volume122en
dc.identifier.doi10.17863/CAM.6293
dcterms.dateAccepted2016-09-19en
rioxxterms.versionofrecord10.1016/j.actamat.2016.09.032en
rioxxterms.versionVoRen
rioxxterms.licenseref.urihttp://creativecommons.org/licenses/by/4.0/en
rioxxterms.licenseref.startdate2016-09-28en
dc.contributor.orcidOwen, Lewis [0000-0003-2311-3908]
dc.contributor.orcidStone, Howard [0000-0002-9753-4441]
dc.contributor.orcidJones, Nick [0000-0002-1851-2261]
dc.identifier.eissn1873-2453
rioxxterms.typeJournal Article/Reviewen
pubs.funder-project-idEPSRC (EP/H500375/1)
pubs.funder-project-idUNIVERSITY OF BIRMINGHAM (FB EPSRC) (EP/H022309/1)
pubs.funder-project-idEPSRC (EP/M005607/1)
datacite.issupplementedby.doi10.17863/CAM.4890en
cam.orpheus.successThu Jan 30 12:57:02 GMT 2020 - The item has an open VoR version.*
rioxxterms.freetoread.startdate2100-01-01


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Attribution 4.0 International
Except where otherwise noted, this item's licence is described as Attribution 4.0 International