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dc.contributor.advisorKrawitz, Aaron D.eng
dc.contributor.authorPaggett, Jon W., 1966-eng
dc.date.issued2005eng
dc.date.submitted2005 Springeng
dc.descriptionThe entire dissertation/thesis text is included in the research.pdf file; the official abstract appears in the short.pdf file (which also appears in the research.pdf); a non-technical general description, or public abstract, appears in the public.pdf file.eng
dc.descriptionTitle from title screen of research.pdf file viewed on (May 25, 2006)eng
dc.descriptionIncludes bibliographical references.eng
dc.descriptionVita.eng
dc.descriptionThesis (Ph. D.) University of Missouri-Columbia 2005.eng
dc.descriptionDissertations, Academic -- University of Missouri--Columbia -- Mechanical and aerospace engineering.eng
dc.description.abstractThe in-situ response of WC-Ni and WC-Co composites under compressive loading was measured using neutron diffraction techniques. These measurements give a clear indication of the elastic strain behavior of both the carbide and metal binder phases in directions both axial and transverse to the applied load. Residual stress measurements were also made on as-produced samples and on those samples which had been mechanically loaded. These measurements show a substantial relaxation in the initial thermal residual stresses of the cemented carbides with high binder content, most of which occurs by the end of the first load-unload cycle. This relaxation in residual stress is also found to be anisotropic, relaxing more in the direction transverse to the loading axis than in the direction parallel to the loading axis. Strain distribution was considered by observing the change in peak widths in the diffraction data. Taken as a whole, the data suggests a profound role for thermal residual stress and the point-to-point variation of residual stress in the response of cemented carbides to applied load. Localized yielding on the scale of the microstructure which acts to absorb energy is proposed as a mechanism for the superior toughness of these materials.eng
dc.identifier.merlinb55439688eng
dc.identifier.urihttp://hdl.handle.net/10355/4109
dc.languageEnglisheng
dc.publisherUniversity of Missouri--Columbiaeng
dc.relation.ispartofcollectionUniversity of Missouri--Columbia. Graduate School. Theses and Dissertationseng
dc.subject.lcshResidual stresseseng
dc.subject.lcshAxial loadseng
dc.titleNeutron diffraction study of load response and residual stresses in WC-(Ni/Co) compositeseng
dc.typeThesiseng
thesis.degree.disciplineMechanical and aerospace engineering (MU)eng
thesis.degree.grantorUniversity of Missouri--Columbiaeng
thesis.degree.levelDoctoraleng
thesis.degree.namePh. D.eng


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