Publication:
A theory of thin lamellar eutectic growth with anisotropic interphase boundaries

dc.contributor.coauthorAkamatsu Silvere
dc.contributor.coauthorBottin-Rousseau Sabine
dc.contributor.coauthorFaivre Gabriel
dc.contributor.departmentDepartment of Mechanical Engineering
dc.contributor.kuauthorŞerefoğlu, Melis
dc.contributor.schoolcollegeinstituteCollege of Engineering
dc.date.accessioned2024-11-09T22:48:51Z
dc.date.issued2012
dc.description.abstractWe present a semiempirical theory of the effects of an orientation dependence of the surface free energy of interphase boundaries (interphase boundary anisotropy) on lamellar eutectic growth in thin samples. We show that, to a good approximation, thin lamellar eutectic patterns with a strong interphase boundary anisotropy travel along the growth front at such a velocity - or, equivalently, at such an inclination angle of the lamellae left behind in the solid - that the surface tension force of the interphase boundary is nearly parallel to the applied thermal gradient. This explains, among other things, the crystallographic locking of lamellar eutectic patterns that occurs in those eutectic grains, which have CUSP singularities in the Wulff plot of the interphase boundary. Based on this theory, we show that the rotating directional solidification method, by which a thin sample is rotated with respect to a fixed unidirectional thermal gradient, must yield eutectic lamellae whose trajectories are nearly homothetic to the two-dimensional Wulff form of the interphase boundary. This opens up new possibilities for the experimental study of interphase boundary anisotropy in eutectic alloys.
dc.description.indexedbyScopus
dc.description.indexedbyWOS
dc.description.issue7.Jun
dc.description.openaccessYES
dc.description.publisherscopeInternational
dc.description.sponsoredbyTubitakEuN/A
dc.description.volume60
dc.identifier.doi10.1016/j.actamat.2012.02.031
dc.identifier.issn1359-6454
dc.identifier.quartileQ1
dc.identifier.scopus2-s2.0-84859102974
dc.identifier.urihttps://doi.org/10.1016/j.actamat.2012.02.031
dc.identifier.urihttps://hdl.handle.net/20.500.14288/6406
dc.keywordsDirectional solidification
dc.keywordsEutectic
dc.keywordsInterphase boundaries
dc.keywordsMicrostructures CUSP singularity
dc.keywordsEutectic alloys
dc.keywordsEutectic grains
dc.keywordsExperimental studies
dc.keywordsGrowth front
dc.keywordsInclination angles
dc.keywordsInterphase boundaries
dc.keywordsLamellar eutectic
dc.keywordsOrientation dependence
dc.keywordsSemi-empirical theory
dc.keywordsSurface free energy
dc.keywordsSurface tension force
dc.keywordsWulff plots
dc.keywordsAnisotropy
dc.keywordsCrystallography
dc.keywordsEutectics
dc.keywordsMicrostructure
dc.keywordsSurface tension
dc.keywordsThermal gradients
dc.keywordsSolidification
dc.language.isoeng
dc.publisherElsevier
dc.relation.ispartofActa Materialia
dc.subjectMechanical engineering
dc.titleA theory of thin lamellar eutectic growth with anisotropic interphase boundaries
dc.typeJournal Article
dspace.entity.typePublication
local.contributor.kuauthorŞerefoğlu, Melis
local.publication.orgunit1College of Engineering
local.publication.orgunit2Department of Mechanical Engineering
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relation.isOrgUnitOfPublication.latestForDiscoveryba2836f3-206d-4724-918c-f598f0086a36
relation.isParentOrgUnitOfPublication8e756b23-2d4a-4ce8-b1b3-62c794a8c164
relation.isParentOrgUnitOfPublication.latestForDiscovery8e756b23-2d4a-4ce8-b1b3-62c794a8c164

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