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    STP520

    Thermal Fatigue Characterization of Cast Cobalt and Nickel-Base Superalloys

    Published: 01 January 1973


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    Abstract

    Tapered disk thermal fatigue tests have been conducted on one cobalt- and one nickel-base superalloy for the purpose of characterizing crack growth behavior. It is shown that linear elastic fracture mechanics can be used to represent the crack growth rate data, and that the propagation mode prefers favorably-oriented carbides.

    Keywords:

    fatigue (materials), fatigue tests, superalloys, nickel containing alloys, cobalt containing alloys, fracturing, crack propagation, cyclic loads


    Author Information:

    Mowbray, DF
    Manager, Mechanics of Materials, and manager, Structural Materials Engineering, General Electric Company, Schenectady, N. Y.

    Woodford, DA
    Senior metallurgical engineer, Materials and Processes Laboratory, General Electric Company, Schenectady, N. Y.

    Brandt, DE
    Manager, Mechanics of Materials, and manager, Structural Materials Engineering, General Electric Company, Schenectady, N. Y.


    Committee/Subcommittee: E08.05

    DOI: 10.1520/STP38858S