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dc.contributor.authorAllen, Samuel Miller
dc.contributor.authorMinamino, Yoritoshi
dc.contributor.authorMinamino, Yoritoshi
dc.date.accessioned2012-04-20T17:05:16Z
dc.date.available2012-04-20T17:05:16Z
dc.date.issued2009-06
dc.date.submitted2009-03
dc.identifier.issn1359-6454
dc.identifier.issn1873-2453
dc.identifier.urihttp://hdl.handle.net/1721.1/70086
dc.description.abstractThe effects of segregation of solute atoms and vacancies on migration of a/4〈1 1 1〉 and a/2〈1 0 0〉 antiphase domain boundaries (APDBs) in stoichiometric Fe3Al at various temperatures are studied using a phase-field model [Koizumi Y, Allen SM, Minamino Y, Acta Mater 2008;56:5861] based on the Bragg–Williams approximation and kinetic parameters determined from experimental data. Boundary mobilities (M) were measured from the boundary velocity of shrinking circular antiphase domains (APDs). In the case of a/4〈1 1 1〉 APDBs, solute atmospheres follow the APDB until the APD vanishes by shrinking to zero radius, and therefore the Ms are always smaller than the intrinsic boundary mobilities because of the solute-drag effect. The M of a/4〈1 1 1〉 APDBs can be enhanced by up to 60% by vacancy segregation. On the other hand, the M of a/2〈1 0 0〉 APDBs is enhanced by only a few per cent. The a/2〈1 0 0〉 APDBs are observed to break away from the solute atmosphere during as the circular ABDBs shrink. The M increases by up to 40% associated with the breakaway, and becomes equal to the intrinsic boundary mobilities even though slight depletion and segregation of Al atoms remain ahead and behind the migrating boundary, respectively.en_US
dc.language.isoen_US
dc.publisherElsevier B.V.en_US
dc.relation.isversionofhttp://dx.doi.org/10.1016/j.actamat.2009.03.012en_US
dc.rightsCreative Commons Attribution-Noncommercial-Share Alike 3.0en_US
dc.rights.urihttp://creativecommons.org/licenses/by-nc-sa/3.0/en_US
dc.sourceProf. Allen via Angie Locknaren_US
dc.titleEffects of Solute and Vacancy Segregation on Migration of a/4<111> and a/2<100> Antiphase Boundaries in Fe₃Alen_US
dc.typeArticleen_US
dc.identifier.citationKoizumi, Yuichiro, Samuel M. Allen, and Yoritoshi Minamino. “Effects of Solute and Vacancy Segregation on Migration of a/4〈111〉 and a/2〈100〉 Antiphase Boundaries in Fe₃Al.” Acta Materialia 57.10 (2009): 3039–3051. Web.en_US
dc.contributor.departmentMassachusetts Institute of Technology. Department of Materials Science and Engineeringen_US
dc.contributor.approverAllen, Samuel Miller
dc.contributor.mitauthorKoizumi, Yuichiro
dc.contributor.mitauthorAllen, Samuel Miller
dc.relation.journalActa Materialiaen_US
dc.eprint.versionAuthor's final manuscripten_US
dc.type.urihttp://purl.org/eprint/type/JournalArticleen_US
eprint.statushttp://purl.org/eprint/status/PeerRevieweden_US
dspace.orderedauthorsKoizumi, Yuichiro; Allen, Samuel M.; Minamino, Yoritoshien
dc.identifier.orcidhttps://orcid.org/0000-0002-6082-332X
dspace.mitauthor.errortrue
mit.licenseOPEN_ACCESS_POLICYen_US


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