Volume 2, Issue 4 (July 1974)

    Strain Fatigue and Tensile Behavior of Inconel® 718 from Room Temperature to 650°C

    CODEN: JTEOAD

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    Abstract

    Results of tensile and fully reversed strain-controlled fatigue tests, conducted on three heats of Incone® 718 that had been subjected to different solution annealing and aging treatments, are presented. Tests were conducted at temperatures ranging from 22 to 650°C, with fatigue tests defining behavior over the cyclic range from 102 to 106 cycles to failure. Average best fit equations defining true stress-strain, strain-controlled fatigue, and cyclic stress-strain behavior are given for the two heat treatments characterized. Heat-to-heat variations in the elevated temperature tensile and fatigue behavior were found. Fatigue lifetime was seen to be dependent upon grain size, particularly at lower strain ranges.


    Author Information:

    Brinkman, CR
    research engineer, Oak Ridge National Laboratory, Oak Ridge, Tenn.

    Korth, GE
    Associate scientist, Aerojet Nuclear Co., Idaho Falls, Idaho


    Stock #: JTE10109J

    ISSN: 0090-3973

    DOI: 10.1520/JTE10109J

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    Author
    Title Strain Fatigue and Tensile Behavior of Inconel® 718 from Room Temperature to 650°C
    Symposium , 0000-00-00
    Committee E08