Thermodynamics of translational states in the Sigma 3 grain boundary system.

Persistent Link:
http://hdl.handle.net/10150/187219
Title:
Thermodynamics of translational states in the Sigma 3 grain boundary system.
Author:
Weinberg, Jonathan David.
Issue Date:
1995
Publisher:
The University of Arizona.
Rights:
Copyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.
Abstract:
The structure and symmetry of grain boundary translational states in the Σ3 {110}//{111} and {110}//{112} bicrystals are reported. Symmetry-dictated extrema in interfacial energy with respect to "in-plane" translation are found. Atomic level calculations are performed to construct a complete y surface for the cell of nonidentical displacements of the system. The thermodynamics of interfaces is extended to include translation as a degree of freedom. The conditions of equilibrium between translational states are then investigated. These conditions in conjunction with the γ surface are used to explain experimental observations of translational states along boundaries in the Σ 3 system. It is shown that under certain constraints, segments of boundary which are unstable with respect to translation may exist. This is consistent with experimental observations.
Type:
text; Dissertation-Reproduction (electronic)
Degree Name:
Ph.D.
Degree Level:
doctoral
Degree Program:
Materials Science and Engineering; Graduate College
Degree Grantor:
University of Arizona
Committee Chair:
Deymier, P.A.

Full metadata record

DC FieldValue Language
dc.language.isoenen_US
dc.titleThermodynamics of translational states in the Sigma 3 grain boundary system.en_US
dc.creatorWeinberg, Jonathan David.en_US
dc.contributor.authorWeinberg, Jonathan David.en_US
dc.date.issued1995en_US
dc.publisherThe University of Arizona.en_US
dc.rightsCopyright © is held by the author. Digital access to this material is made possible by the University Libraries, University of Arizona. Further transmission, reproduction or presentation (such as public display or performance) of protected items is prohibited except with permission of the author.en_US
dc.description.abstractThe structure and symmetry of grain boundary translational states in the Σ3 {110}//{111} and {110}//{112} bicrystals are reported. Symmetry-dictated extrema in interfacial energy with respect to "in-plane" translation are found. Atomic level calculations are performed to construct a complete y surface for the cell of nonidentical displacements of the system. The thermodynamics of interfaces is extended to include translation as a degree of freedom. The conditions of equilibrium between translational states are then investigated. These conditions in conjunction with the γ surface are used to explain experimental observations of translational states along boundaries in the Σ 3 system. It is shown that under certain constraints, segments of boundary which are unstable with respect to translation may exist. This is consistent with experimental observations.en_US
dc.typetexten_US
dc.typeDissertation-Reproduction (electronic)en_US
thesis.degree.namePh.D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.disciplineMaterials Science and Engineeringen_US
thesis.degree.disciplineGraduate Collegeen_US
thesis.degree.grantorUniversity of Arizonaen_US
dc.contributor.chairDeymier, P.A.en_US
dc.contributor.committeememberRaghavan, S.en_US
dc.contributor.committeememberZelinski, B.J.J.en_US
dc.identifier.proquest9603367en_US
All Items in UA Campus Repository are protected by copyright, with all rights reserved, unless otherwise indicated.