Shared more. Cited more. Safe forever.
    • advanced search
    • submit works
    • about
    • help
    • contact us
    • login
    View Item 
    •   MOspace Home
    • University of Missouri-Columbia
    • Graduate School - MU Theses and Dissertations (MU)
    • Theses and Dissertations (MU)
    • Dissertations (MU)
    • 2005 Dissertations (MU)
    • 2005 MU dissertations - Freely available online
    • View Item
    •   MOspace Home
    • University of Missouri-Columbia
    • Graduate School - MU Theses and Dissertations (MU)
    • Theses and Dissertations (MU)
    • Dissertations (MU)
    • 2005 Dissertations (MU)
    • 2005 MU dissertations - Freely available online
    • View Item
    JavaScript is disabled for your browser. Some features of this site may not work without it.
    advanced searchsubmit worksabouthelpcontact us

    Browse

    All of MOspaceCommunities & CollectionsDate IssuedAuthor/ContributorTitleIdentifierThesis DepartmentThesis AdvisorThesis SemesterThis CollectionDate IssuedAuthor/ContributorTitleIdentifierThesis DepartmentThesis AdvisorThesis Semester

    Statistics

    Most Popular ItemsStatistics by CountryMost Popular AuthorsStatistics by Referrer

    Neutron diffraction study of load response and residual stresses in WC-(Ni/Co) composites

    Paggett, Jon W., 1966-
    View/Open
    [PDF] public.pdf (10.20Kb)
    [PDF] short.pdf (10.50Kb)
    [PDF] research.pdf (3.483Mb)
    Date
    2005
    Format
    Thesis
    Metadata
    [+] Show full item record
    Abstract
    The 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.
    URI
    https://hdl.handle.net/10355/4109
    https://doi.org/10.32469/10355/4109
    Degree
    Ph. D.
    Thesis Department
    Mechanical and aerospace engineering (MU)
    Collections
    • Mechanical and Aerospace Engineering electronic theses and dissertations (MU)
    • 2005 MU dissertations - Freely available online

    Send Feedback
    hosted by University of Missouri Library Systems
     

     


    Send Feedback
    hosted by University of Missouri Library Systems