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    Elevated Temperature Fatigue Crack Growth in a Nickel Base Superalloy under Dwell Conditions

    New search for: J. Byrne
    New search for: R. Hall
    New search for: M. Alabraba
    New search for: L. Grabowski
    New search for: I. W. Hussey

    Corner crack growth was studied in Waspaloy at 550 to 650 C under cyclic (0.25 Hz) and 5 minute dwell at peak load conditions, both at R = 0.1. No significant effect of dwell in fatigue crack growth rate was found at 550 C, where predominantly transgranular cracking occurred. At 600 and 650 C, under dwell cycling a transition to entirely intergranular cracking was accompanied by a severe increase in crack growth rate. Using the change in temperature as a correlating parameter, dwell cycling behavior at 650 C is successfully predicted using a linear summation model based on static load and fatigue data.

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    Elevated Temperature Fatigue Crack Growth in a Nickel Base Superalloy under Dwell Conditions

    New search for: J. Byrne
    New search for: R. Hall
    New search for: M. Alabraba
    New search for: L. Grabowski
    New search for: I. W. Hussey

    Corner crack growth was studied in Waspaloy at 550 to 650 C under cyclic (0.25 Hz) and 5 minute dwell at peak load conditions, both at R = 0.1. No significant effect of dwell in fatigue crack growth rate was found at 550 C, where predominantly transgranular cracking occurred. At 600 and 650 C, under dwell cycling a transition to entirely intergranular cracking was accompanied by a severe increase in crack growth rate. Using the change in temperature as a correlating parameter, dwell cycling behavior at 650 C is successfully predicted using a linear summation model based on static load and fatigue data.

    Access

    Access via TIB
    Check availability in my library

    Elevated Temperature Fatigue Crack Growth in a Nickel Base Superalloy under Dwell Conditions

    New search for: J. Byrne
    New search for: R. Hall
    New search for: M. Alabraba
    New search for: L. Grabowski
    New search for: I. W. Hussey

    Corner crack growth was studied in Waspaloy at 550 to 650 C under cyclic (0.25 Hz) and 5 minute dwell at peak load conditions, both at R = 0.1. No significant effect of dwell in fatigue crack growth rate was found at 550 C, where predominantly transgranular cracking occurred. At 600 and 650 C, under dwell cycling a transition to entirely intergranular cracking was accompanied by a severe increase in crack growth rate. Using the change in temperature as a correlating parameter, dwell cycling behavior at 650 C is successfully predicted using a linear summation model based on static load and fatigue data.

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    Access via TIB
    Check availability in my library

    Access

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    Title:

    Elevated Temperature Fatigue Crack Growth in a Nickel Base Superalloy under Dwell Conditions

    Contributors:

    J. Byrne (author) / R. Hall (author) / M. Alabraba (author) / L. Grabowski (author) / I. W. Hussey (author)

    Publication date:

    1992

    Size:

    8 pages

    Type of media:

    Report

    Type of material:

    No indication

    Language:

    English

    Keywords:

    Nonferrous Metals & Alloys , Crack propagation , Dwell , Fatigue life , Thermal fatigue , Waspaloy , Cyclic loads , High temperature , Temperature effects , Calibrating , Corners , Granular materials , Mathematical models , Static loads , Thermal cycling tests , Foreign technology

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