The out-of-phase thermomechanical fatigue behavior of Ultra SCS-6/Ti-24Al-17Nb-xMo (at.%) metal matrix composites

J. P. Quast, C. J. Boehlert

    Research output: Research - peer-reviewArticle

    • 2 Citations

    Abstract

    The out-of-phase thermomechanical fatigue behavior of Ultra SCS-6/Ti-24Al-17Nb-2.3Mo (at.%), Ultra SCS-6/Ti-24Al-17Nb-1.1Mo (at.%), and Ultra SCS-6/Ti-24Al-17Nb-0.6Mo (at.%) continuously-reinforced metal matrix composites (MMCs) was investigated in order to understand the effect of Mo on the microstructure and fatigue behavior of titanium-alloy-matrix composites. From the recorded stress versus cycle behavior, two failure regimes were noted. For the highest stresses examined, fatigue-dominated failure occurred. For the lowest stresses examined, a creep-dominated failure occurred. The Ultra SCS-6/Ti-24Al-17Nb-1.1Mo MMC exhibited the shortest fatigue lives for all the applied stress levels examined. The Ultra SCS-6/Ti-24Al-17Nb-2.3Mo MMC exhibited the longest fatigue lives for the lowest applied stress levels, and the Ultra SCS-6/Ti-24Al-17Nb-0.66Mo MMC exhibited the longest fatigue lives for most of the higher applied stress levels.

    LanguageEnglish (US)
    Pages610-620
    Number of pages11
    JournalInternational Journal of Fatigue
    Volume32
    Issue number3
    DOIs
    StatePublished - Mar 2010

    Profile

    Metal Matrix Composites
    Fatigue
    Metals
    Fatigue of materials
    Composite materials
    Fatigue Life
    Lowest
    Titanium Alloy
    Creep
    Microstructure
    Composite
    Cycle
    Titanium alloys

    Keywords

    • Composites
    • Intermetallics
    • Microstructures
    • Thermomechanical fatigue
    • Titanium alloys

    ASJC Scopus subject areas

    • Industrial and Manufacturing Engineering
    • Mechanical Engineering
    • Mechanics of Materials
    • Materials Science(all)
    • Modeling and Simulation

    Cite this

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    title = "The out-of-phase thermomechanical fatigue behavior of Ultra SCS-6/Ti-24Al-17Nb-xMo (at.%) metal matrix composites",
    abstract = "The out-of-phase thermomechanical fatigue behavior of Ultra SCS-6/Ti-24Al-17Nb-2.3Mo (at.%), Ultra SCS-6/Ti-24Al-17Nb-1.1Mo (at.%), and Ultra SCS-6/Ti-24Al-17Nb-0.6Mo (at.%) continuously-reinforced metal matrix composites (MMCs) was investigated in order to understand the effect of Mo on the microstructure and fatigue behavior of titanium-alloy-matrix composites. From the recorded stress versus cycle behavior, two failure regimes were noted. For the highest stresses examined, fatigue-dominated failure occurred. For the lowest stresses examined, a creep-dominated failure occurred. The Ultra SCS-6/Ti-24Al-17Nb-1.1Mo MMC exhibited the shortest fatigue lives for all the applied stress levels examined. The Ultra SCS-6/Ti-24Al-17Nb-2.3Mo MMC exhibited the longest fatigue lives for the lowest applied stress levels, and the Ultra SCS-6/Ti-24Al-17Nb-0.66Mo MMC exhibited the longest fatigue lives for most of the higher applied stress levels.",
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    author = "Quast, {J. P.} and Boehlert, {C. J.}",
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