Influence of solute segregation on stress and structure evolution in nanocrystalline thin films

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dc.contributorBrewer, Luke N.
dc.contributorGenau, Amber
dc.contributorMankey, Gary J.
dc.contributorWeaver, Mark Lovell
dc.contributor.advisorThompson, Gregory B.
dc.contributor.authorZhou, Xuyang
dc.contributor.otherUniversity of Alabama Tuscaloosa
dc.date.accessioned2018-07-11T16:49:45Z
dc.date.available2018-07-11T16:49:45Z
dc.date.issued2018
dc.descriptionElectronic Thesis or Dissertationen_US
dc.description.abstractAlloy thin films offer several tantalizing opportunities to engineer the growth and subsequent stress conditions in thin films. This can be achieved by the mixed interaction of two or more species. For example, grain size is a known quantity in regulating the stress and is most often controlled through processing via pressure, temperature, deposition rate, or a combination of each of these variables. In an alloy, where one species is highly segregating, the solute can also control the grain size and therefore the stress. Based on this hypothesis, this work has elucidated how alloying effects in the residual growth stresses for a series of W-Cr, W-Fe, and Fe-Cr thin films. In addition, a molecular dynamics (MD) model for the growth of elemental W and Fe films was constructed to understand how different microstructures and processing variables control stress.en_US
dc.format.extent336 p.
dc.format.mediumelectronic
dc.format.mimetypeapplication/pdf
dc.identifier.otheru0015_0000001_0002997
dc.identifier.otherZhou_alatus_0004D_13392
dc.identifier.urihttp://ir.ua.edu/handle/123456789/3682
dc.languageEnglish
dc.language.isoen_US
dc.publisherUniversity of Alabama Libraries
dc.relation.haspartSupplementary material includes a Matlab code for generating polycrystalline grain structure.
dc.relation.hasversionborn digital
dc.relation.ispartofThe University of Alabama Electronic Theses and Dissertations
dc.relation.ispartofThe University of Alabama Libraries Digital Collections
dc.rightsAll rights reserved by the author unless otherwise indicated.en_US
dc.subjectMaterials science
dc.titleInfluence of solute segregation on stress and structure evolution in nanocrystalline thin filmsen_US
dc.typethesis
dc.typetext
etdms.degree.departmentUniversity of Alabama. Department of Metallurgical and Materials Engineering
etdms.degree.disciplineMaterials Science
etdms.degree.grantorThe University of Alabama
etdms.degree.leveldoctoral
etdms.degree.namePh.D.
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